Friday, September 25, 2009

Spot GPS Tracker and Satellite Messenger

Love this gadget for my outdoor trips and just for peace of mind on the road. Hint: give it 20 minutes to uplink!
It is not a full featured Personal Locator Beacon, but very useful nevertheless.
For example you can easily geotag all your pictures simply by setting your camera time to GMT and after you come back home download .gpx file of your trip from Spot website into the same directory where you keep pictures of the trip. Now use GPicSync and photos are all geotaged!
You can even share your adventure on internet like this!
The original version of Spot GPS Tracker won 2008 WSJ Technology Innovation Award.
New updated version of Spot GPS Tracker and Satellite Messenger just hit on-line stores...

Weighted Grades


How this concept actually works? Here is helpful illustration:

Find more at exponentialcurve

Sunday, September 03, 2006

Maths is Good for You...

Interesting math site Maths is Good for You!

Thursday, July 13, 2006

Symbolic Sculptures



John Robinson's Symbolic Sculptures have brought together the artist and mathematician. This graceful sculpture is of two intertwined parts, each of them cut from an ovoid, the symbol of life.

Math related Java Applets

It's a HUGE collection of Math related Java Applets. Some are unique!

Sunday, December 18, 2005

Collection of cool Google Maps you would have never thought of

This blog http://coolgooglemaps.blogspot.com is dedicated to interesting and cool google maps/mashups!
It is very similar to this one http://googlemapsmania.blogspot.com/
Can't decide wich one was first or wich one is better.

There is one very usefull site
http://map.spieslike.us/school.php
that will help you to find a nearby school!

You can also help to find missing person using
http://map.spieslike.us/missingpersons.php

read more | digg story

Saturday, December 03, 2005

An ocean current in the North Atlantic is getting weaker

Those who worry about climate change worry about many things: rising temperatures, rising sea levels, changes in rainfall, stronger storms and now this!
So... Gulf Stream now becomes Atlantic El Nino (aka La Ninia) ?

read more | digg story

Learn to solve the "Rubik's Cube"

A very colorful, easy, and descriptive tutorial on how to solve the Rubik's Cube.

read more | digg story

Using simulated annealing to solve the traveling salesman problem

Simulated annealing is an artificial intelligence technique that can be used to solve the traveling salesman problem. This page uses an applet to demonstrate simulated annealing. Full Java source code is included.

read more | digg story

Computer History - from B.C. to today

Computer History from the abacus to Ebay acquiring Skype.

Pretty Interesting. Just click the dates at the right

read more | digg story

Hundreds of Free Textbooks on one website

This is a collection of free textbooks from around the web. The site is non-commercial, easy to browse or search, and has links to hundreds of free books and educational sites in a variety of subjects. Users can leave reviews of the books in the registration-free comment fields.Enjoy!

read more | digg story

ReserveMy.com: Hotel Search Integration with Google Maps

ReserveMy.com makes hotel search and booking based on a street map integration with Google Maps.
Similar integration of Google Maps and real estate listings from craigslist.org was done by famous housingmaps.com and trulia.com.
It's awesome looking and incredibly useful! Enjoy!

read more | digg story

Saturday, January 15, 2005

Brontobyte and rumors about Nisababyte

Here is handy table
1 bit = a binary digit
8 bits = 1 byte
1000 bytes = 1 kilobyte
1000 kilobytes = 1 megabyte
1000 megabytes = 1 gigabyte
One gigabyte of information - about a quarter of the memory of an iPod mini - is the equivalent of a pick-up truck load of paper.
1000 gigabytes = 1 terabyte
1000 terabytes = 1 petabyte
1000 petabytes = 1 exabyte
1000 exabytes = 1 zettabyte
1000 zettabytes = 1 yottabyte
1000 yottabytes = 1 brontobyte
1000 brontobytes = 1 geopbyte or is it 1 nisababyte?
1000 geopbytes = is what?
There are rumors on the web that
nisababyte is 1000 brontobytes and a zotzabyte = 1000 nisababytes
.
Not sure about it... Any better ideas?

And those who insist that
1 Byte = 8 Bit
1 Kilobyte = 1024 Bytes
1 Megabyte = 1048576 Bytes
1 Gigabyte = 1073741824 Bytes
can use this byte converter.

eHow on K-12

How to Find the Area of Basic 2-D Figures

How to Find the Volume of Basic 3-D Figures


How to Find the Surface Area of Basic 3-D Figures

etc...

Math That Makes You Go Wow

For the most part it is site about Moebius Band and Klein Bottle. Very well done!
A Multi-Disciplinary Exploration of Non-Orientable Surfaces
Written and designed by Margaret Boittin, Erin Callahan, David Goldberg, and Jacob Remes for Math 195a at Yale University. December 1998.

All things Google...

Good starting point is Google Cheatsheet.
More helpful hints on how to use Google.
Search your own PC using Google
Search your own webpage using Google
Seems not working on blogspot... Am I wrong?

Unofficial gmail FAQ
Use gmail account as network drive!
Want to warn you that network drive is experimental software and not official Google service.
Very funny blog about google
Googlefight! Find out what is more popular search on Google.
Simply awesome TouchGraph Google Browser
And finally financial information: search google using stocks:GOOG

The Mathematics of Tsunamis

The simplest theory of water waves that reasonably approximates the behavior of real ocean waves is the system of coupled partial differential equations known as the shallow water wave equations.
What happens when tsunamis surpass the speed of sound?
Newscientist on tsunami

Friday, January 14, 2005

Zeno's Paradox of Motion

The Dichotomy: There is no motion, because that which is moved must arrive at the middle before it arrives at the end, and so on ad infinitum.

The Achilles: The slower will never be overtaken by the quicker, for that which is pursuing must first reach the point from which that which is fleeing started, so that the slower must always be some distance ahead.

The Arrow: If everything is either at rest or moving when it occupies a space equal to itself, while the object moved is always in the instant, a moving arrow is unmoved.

The Stadium: Consider two rows of bodies, each composed of an equal number of bodies of equal size. They pass each other as they travel with equal velocity in opposite directions. Thus, half a time is equal to the whole time.
And the solution is ...
Series and Convergence
Deconstructing Infinity: An Analysis of Zeno's Paradox

Thursday, January 13, 2005

Sample interview questions for teaching candidates

Why did you decide to become a teacher?
Do you consider yourself a risk taker?
What do you want to do with your life?
What is the last book you read?
Are you an empathetic person?
How can you tell that a person is a good listener?
Are you an objective person?


Some people say you should demand respect. Do you agree or disagree?
Do you believe you should build rapport with students? If yes, how?
How would you rank these in importance and why? Planning, discipline, methods, evaluation.
If a student said she thought you were the worst teacher she ever had, what would you say?
If a student came to you and said, "None of the other students like me," what would you tell him/her?


It is the first day of class, you are writing something on the board and a paper wad hits you in the back, what would you do? Later the same day, if all the students drop their pencils, what do you do?
How do you feel about noise in the classroom? How do you handle noise in the classroom?


How do you feel if a student does not meet a deadline?
How do you encourage students to learn? Can a student be forced to learn?
How do you feel about computers in the classroom?


If I were your principal and we were setting goals for next year, what would they be?
What is the role of the principal? Does a conflict exist between your perception of a principal's role and his/her role as your evaluator?
If you could create the ideal school, what would it be like?

jsMath: A method of including Mathematics in Web Pages

The jsMath provides a method of including mathematics in HTML pages.
It works across multiple browsers for both Windows and the Macintosh.
jsMath uses native fonts, so they resize when you change the size of the text in your browser, they print at the full resolution of your printer, and you don't have to wait for dozens of images to be downloaded in order to see the mathematics in a web page. Complex Analysis Examples.
More jsMath Examples.
I'll give it a try on this blog a bit later...

To be sure there are other options as well....
An XHTML + MathML + SVG Profile
Backwards Compatibility
For HTML 4, SVG drawings can be embedded using the 'object' element. The following example shows how to use the 'object' element to include an SVG drawing via a URL reference with an image serving as the alternate representation in the absence of an SVG user agent:
<--!html>
<--!body>
<--!object type="image/svg+xml" data="drawing.svg">
<--!The contents of the 'object' element (i.e., an alternate image) are drawn in the event the user agent cannot process the SVG drawing. >
<--!img src="alternate_image.jpg" alt="alternate description">
<--!/object>
<--!/body>
<--!/html>

SVG Tutorial: Maths Limited version

Monday, January 10, 2005

Animation of Mars rover space trip and Huygens pictures of Titan

Simply enjoy this animation of Mars rover space trip and
Huygens pictures of Titan

Interview question: "Tell me about Parent-Teacher Conferencing"

Why have Parent-Teacher conferences?
Report cards fall short in informing parents for obvious reasons.
You learn about student's parents
Best opportunity you have to cooperate with parents and to resolve any problems kid might have.
Learn more from this book: Teacher-Parent Interviews, by Grace Langdon and Irving W. Stout, Prentice-Hall.

Interview question: "What are three major class room rules for students?"

Another popular question: "What are three major class room rules for students? And what are consequences of violating them?"
Rule number one:
Rise your hand if you want to talk. You loose your turn to talk if you violate this rule.
Rule number two:
Follow the directions of the teacher the first time they are given.
Rule number three:
everybody in the classroom are to be treated with courtesy and no words or actions intended to cause anyone harm will be allowed.
Consequences
First Step - Verbal warning
Second Step - Hold after class for conference with teacher
Third Step - Parent contact, detention after school with teacher
Fourth Step - Referral to the assistant principal for discipline
Fifth Step - Immediate exclusion from class and referral to the office

Serious offenses like refusal to follow the instructions of the teacher or acts of violence will be immediately excluded from the classroom.

Good behavior and academic performance will be noted by:
Verbal praise - we all like to hear about it when things to well!
Phone calls to parents - calls from the teacher should not always mean bad news.
Positive post cards to parents
Fun days - days or time for student chosen activities.
===================
Ideas for Classroom Rules from Melissa Kelly

1. Come to class on time. Standing outside the door and rushing in after the bell has begun to ring will constitute a tardy. You must be INSIDE the door when it begins ringing to be counted on time.
2. Begin the start up activity within 1 minute after the tardy bell. Directions will be on the projection screen or the board. Please do not wait for me to remind you to begin since I need to take roll and attend to other duties for the first few minutes of the period. When I begin class, directions for the start up may be taken down, so don't delay.
3. Attend to personal needs before coming to class. I have been instructed not to give passes to lockers and to limit passes, so please do not ask for a pass unless you have a true emergency.
4. Remain in your assigned seat unless you have permission to get up . Throw scraps away at the end of the period on your way out.
5. Do not eat candy or other food in class unless you have been given special permission. School sponsored sales will be permitted during the last 5 minutes of class IF we are finished with the lesson and permission is granted. Be sure to ask first.
6. Bring required materials every day unless you are otherwise directed.
7. Talk only when permitted. Be aware of the situation since quiet talking is allowed in some situations and speaking to the entire group without raising your hand may be allowed in others. I will remind you once and expect compliance.
8. Use polite speech and body language. Unkind teasing and impolite behavior is unacceptable. Please do not ask to step outside to spit.
9. Do not cheat. Students caught cheating will receive a zero and a phone call home. Both the student who shares his work for an independent assignment AND the person who copies it will suffer the same consequences. I expect you to do your own work and to be sure no one can copy it.
10. Follow the teacher's directions immediately. Keep me happy and I'll do a better job for you!
========================
Or even better! Let students make the rules!

Interview question: "What is your grading system?"

Here is a popular interview question: "What is your grading system?"
I prefer total point grading system. Need to elaborate on this here....
A+ Highest passing grade 4.0
A 4.0
A- 3.7
B+ 3.3
B 3.0
B- 2.7
C+ 2.3
C 2.0
C- 1.7
D+ 1.3
D 1.0
D- Lowest passing grade 0.7
P Passing -
S Satisfactory -
F Failure 0.0
W Withdrawn -
I Incomplete -
R Deferred Grade -
NC No Credit -
NR No grade received -
NY Signifies enrollment in a special program for which credit earned will be recorded when completed.

NSF funded Math Curricula

Elementary Curricula
ARC, the Alternatives for Rebuilding Curricula Center is a collaboration between COMAP, the Consortium for Mathematics and Its Applications and the three National Science Foundation supported elementary mathematics curriculum projects:
  • Everyday Mathematics developed at the University of Chicago.

  • Investigations in Number, Data, and Space

  • Math Trailblazers

  • Middle-School Curricula
    Implementation Center, The Show-me center works with four NSF-sponsored middle grades mathematics curriculum development Satellite Centers (University of Wisconsin, Michigan State University, University of Montana, and Educational Development Center)
    High-School Curricula
    Implementation Center,COMPASS, Curricular Options in Mathematics Programs for All Secondary Students.

    I think these are the places where one can get specifics about math curricula.

    Sunday, January 09, 2005

    National Science Teacher Association

    It is a possibility that I will adjust my course and will teach science at first if math teacher position will be not available at first. Now on I'll start to blog on science teaching as well.

    Free educational games

    Free Math games from Alfy
    They claim that child's reading and math skills will improve right away.
    I hadn't tried it yet, so can't tell...

    TIMSS, PIRLS, NAEP

    I keep discovering more abbreviations...
    I wonder how these studies can benefit an average teacher...
    May be if one chooses topics carefully test scores will go up?
    NCREL, the North Central Regional Educational Laboratory has been developing an interactive Web site designed to assist school districts in their reform efforts of mathematics and science curricula.
    Anyhow here are the links...
    TIMSS, the Trends in International Mathematics and Science Study, is designed to help countries all over the world improve student learning in mathematics and science.
    TIMSS Research Questions
    1. How do teachers in different countries teach?
    2. How do their instructional practices differ?
    How do these differences affect learning?
    What can we learn from this?
    3. What curriculum differences exist among the countries?
    What is taught and when? What is not covered?
    4. What are the different social and cultural contexts with which this learning takes place?
    5. How do these affect learning?
    6. What lessons can we learn?


    PIRLS, the Progress in International Reading Literacy Study is one of the largest international assessments of reading literacy
    NAEP, the National Assessment of Educational Progress Often called "The Nation's Report Card"
    You can get results of NAEP studies here.
    And here you can get TIMSS 2003 International Science Reports.
    The TIMSS Assessment Frameworks and Specifications 2003 is the publication that describes in some detail the mathematics and science content to be assessed. The document also presents a framework describing the contextual factors associated with students’ learning in mathematics and science.

    Friday, December 10, 2004

    CAT- comprehensive assessment test

    Link to Massachusetts Comprehensive Assessment tests with correct answers.
    Sample Student Work and Scoring Guides
    Downloadpdf file with Massachusetts CAT test
    Florida sample CAT
    Test is too tough for sometoo tough for some
    Florida CAT explorer


    Open Directory Project Presented by the Edvisors Network
    helpfull testing links
    Question Base 2.0 by Michael Smith
    - a questions editor and tester. You can design your own tests using it.
    It has support for variables, so that numeric questions can change every time you ask them. The answers to such questions can contain expressions that are evaluated on the basis of the variables in the question. And it's free...

    Thursday, December 09, 2004

    Teacher job interview? It's teacher style profile prescreening!

    So you want to be a teacher? You think you need to be ready for an Interview. First better be ready for teacher style profile prescreening! It's about 30 questions in 15 minutes. No time to think! They want your subconscious response. Like in the heat of the moment!
    To give you an idea - it's all about teacher - kids - principal triangle. Will you handle kids yourself or will you let principal deal with them and their parents? Not subject related at all!
    Be aware that results of this 15 minutes test will stay on your record for 2 (yes two) years! And you can't see them!
    I'm glad I read the book by Mike Kelley rookie teaching for dummies before taking this test.
    more interview tips
    Tips by Educational placement Service

    Student Assessment by OECD's PISA

    This is in the news. Kids' math scores country by country.
    And the winners are ?
    You guessed it right! The patient folks!
    Korea and Finland

    Monday, December 06, 2004

    Institute of Internet History - a non-profit, non-governmental, non-organization

    Do you know what "ping" is all about?
    According to Institute of Internet History also known as "non-organization" back in 1902 poor kids cleaning rusty pipes were called "pings".
    To keep the rust at bay, network operators and service providers employed young boys, and sometimes girls, to run through the pipes with stout wire brushes to remove built-up deposits. These boys and the runs they made were referred to colloquially as "pings" due to the noise they made by tapping their brushes on the inside of the pipe at each joint to indicate their progress. The term "ping" is still used today to refer to a method of ensuring that a route on the Internet is available and not clogged.

    Friday, December 03, 2004

    Wednesday, December 01, 2004

    Nine-year-old invented term googol

    It's incredible how much kids contribute to math!
    As story goes term googol for number 10 to the power of 100 was coined by Milton Sirotta then nine year old nephew of American mathematician Edward Kasner.
    A googol is greater than the number of particles in the known universe!
    And what is googolplex, 10 to the power of googol?

    Math Forum on Googol Googolplex and others
    Wikipedia on Names of large numbers
    Wolfram's Mathworld on Large Numbers

    Human brain held about 200 megabytes of information

    Back in 1986 Tom Landauer concluded that the human brain can held about 200 megabytes of information. He got this number by estimating the rate at which people take in information and the rate at which people forget things.

    And hard drive on my computer is 100 gigabytes! Now you see why title of my blog is "Things to remember"!

    With about 6 billion people on Earth the total memory of humans now alive is about 1,200 petabytes. The Library of Congress is about 2-3 petabystes.

    As far as processing power goes prof. George Miller estimated that our brain can handle five to nine thoughts at once. Read more about human mind

    References:
    T. K. Landauer How much do people remember? Some estimates of the quantity of learned information in long-term memory, Cognitive Science, 10 (4) pp. 477-493 (Oct-Dec 1986).

    Michael Lesk How Much Information Is There In the World?

    Philip and Phylis Morrison The Sum of Human Knowledge?

    Big numbers in your hands: Rubik's cube

    Rubik's cube is a good teaching tool for two reasons:
    - it has 43,252,003,274,489,856,000 different positions (~ 43 quintillion) and can be a good example of a huge number right in the students hands.
    - solution of the puzzle was discovered (among others) by then a 12 year-old schoolboy from Britain Patrick Bossert
    Can you top this inspirational toy ?

    Tuesday, November 30, 2004

    Teach For America

    Should I join Teach for America?

    Fractal Dimension

    Check out explanation of a fractal dimensions based on the following definition of a dimension of a self-similar object. The dimension is an exponent of the number of self-similar pieces with magnification factor N into which the figure may be broken.
    Hope this make sense for you. ;-).
    Sierpinski triangles can help you visualize the concept.

    Math, Music and Dance

    Math and music harmony close relations are well known.
    On Math forum Julie Strandberg claims math connection to dance too.
    Since dance can be recorded as a plot then it should be possible to use math to analyze it! It's just a function!
    This dance movement documenting system is called labanotation and used to archive popular dances and entire ballets.
    Dance can be used to teach math!

    Journal of Mathematics Teacher Education

    Here is a free issue of Journal of Mathematics Teacher Education published by Kluwer.

    Powerpoint and Macromedia flush lessons on the Web

    Both Powerpoint and Macromedia flush lessons are great teaching tools!
    This site sells powerpoint math lessons.
    These movies shows family of hyperboloids and the 4th dimension. Davide Cervone production.

    Was Mathematics Invented or Discovered?

    Here is one view.
    Here is a brief math history overview. This is in fact huge math history site! It has even clickable maps of mathematicians birthplaces!

    Mathematics Pronunciation Guide

    This guideincludes most mathematicians and mathematical terms that may been encountered in high school and the first two years of college.

    Do you say "two thousand three" or "two thousand and three" when you talking about 2003?
    Talking about numbers is not easy! Top 10 APA Trouble Spots
    Check out this discussion with Dr. Math at Math forum.
    Of course it depends whom you are talking to.
    To check how it will sound in Brithish English, American English, Australian English, Canadian English, Irish English, Scottish English and Welsh English go to fonetiks.org
    Still confused? Then use Merriam-Webster dictionary pronunciation!

    The Mathematics Contests on the Web

    This is on going math contest for students! List of old problems is available too! Students submitting correct solutions will have their name, school, and location displayed on that contest's site.
    Look here for more links to Math contests sites.
    Or you can go directly to White House website for more problems submitted by David Rock from University of Massachusetts Dartmouth and Doug Brumbaugh from University of Central Florida


    Oracle ThinkQuest contest with a variety of prizes. Teachers can coach teams of 3 to 6 students, ages 9 to 19. Teams have 6 months to build a website on any topic within one of the official competition categories. In math they have already Algebra (23) Arithmetic (60) Calculus (11) Chaos Theory (6) Fractals (9) Geometry (26) Puzzles (6)Statistics (2) and Trigonometry (2).
    Some are very creative!



    Reviews of math textbooks

    I was about to write reviews on some math books I had used when I discovered this site.
    Here is the list of the books I had on my desk at that time

    Peterson's Get Wise! Mastering Math Word Problems by Maureen Steddin
    and here is a link to a good source of the world problems


    Math coach. A parent's guide to helping children to succeed in Math by Wayne & Ingrid Wickelgren


    Calculus by P.Abbot, revised by Hugh Neill


    Barron's Review Course Series. Let's Review: Math B by Lawrence Leff

    Mike Kelley holds this web page together with aluminum foil and chewing gum

    Serious help on how to teach calculus for the calculus phobe. Lessons are presented as a flush movie with a verbal narrative. Simply the best I found on the web so far!
    Has very helpful search that works great. You can also use alphabetical index to navigate the site.
    Mike Kelley's site impressive collection of awards and recognitions
    Good stuff indeed!

    Sunday, November 28, 2004

    More K-8 math lessons on the web

    This is AAA math website.
    Covers many topics taught at kindergarten and up to 8th grade.
    There are lessons on consumer math too. For example
    how to calculate tip.

    Teaching Philosophy

    Detailed Statement on Teaching Philosophy by Andrew V. Knyazev who is with Department of Mathematics at University of Colorado at Denver. Here is his approach to testing:
    I open each session with a brief reminder of the previous session's material and an outline of the day's topic, and I typically conclude with a summary of key points. There is a special session for review before every major test. I usually speak clearly, loudly, and slowly, but enthusiastically. Students are encouraged to learn from each other as their grades are not curved, thus, students are not competing with their classmates. In some classes, I give group projects and homework. When possible, I distribute solutions to homework problems, quizzes, and tests. To reduce students' anxiety about tests, I make old exams available on the Web, and often give practice tests. I usually give a test on prerequisites during the first week of the course. I do not consider memorization to be the most important in math courses; all my tests are open book/notes. Assignments and projects are naturally integrated into my courses. I spend time explaining the assignments and solving similar problems in class for further discussion.

    Thursday, November 25, 2004

    My first interview for math teacher job.

    I had my first interview for a math teacher position. Besides common personal questions I was grilled on my lesson plans and how I will spend 75 minute lesson time minute by minute. My IT credentials where of help of course but lack of teaching experience showed, especially when some visual aid tools were discussed. In upcoming blog posts I’ll talk more about lesson plans.

    What issues should a teacher think about before a job interview? I wish I had found this site before! Especially discussions on changing career from an engineer to a teacher.

    Update
    I lost it! I shoot myself in the foot, saying “math lessons might be boring at times". Never ever boring! You are entertainer/teacher! Not exactly stand up comedy but close! Each time you want to say boring simply say interesting (but not exiting!). You will do yourself great service by changing your vocabulary a bit.

    Sunday, November 07, 2004

    The Chicago Sun-Times about teachers certifications

    It's interesting reading about:
    Teacher shortage at 'crisis' level
    5,243 Illinois teachers failed key exams
    Kids take the test, say it's too easy
    Why are teacher tests secret?
    Tips for parents who want to know about a teacher's state certificate
    Teachers who barely passed the Basic Skills test

    and more ...

    ADHD rating scale

    I found this post on assigned seat blog:" I was just given a form I'd never seen before. It's entitled "ADHD RATING SCALE IV - SCHOOL EDITION." I am to return it completed concerning a student in about an hour. There are 18 different statements concerning behavior and a scale of 0, 1, 2, and 3.
    0 == "never or rarely" 1 == "sometimes" 2 == "often" 3 == "very often"

    1. Fails to give close attention to details or makes careless mistakes in schoolwork.
    2. Fidgets with hands or feet or squirms in seat
    3. Has difficulty sustaining attentino in tasks or play activities.
    4. Leaves seat in classroom or in other situations in which remaining seated is expected.
    5. Does not seem to listen when spoken to directly
    6. Runs about or climbs excessively in situations in which it is inappropriate
    7. Does not follow through on instructions and fails to finish work.
    8. Has difficulty playing or engaging in leisure activities quietly.
    9. Has difficulty organizing tasks and activities.
    10. Is "on the go" or acts as if "driven by a motor."
    11. Avoids tasks (e.g. schoolwork, homework) that require sustained mental effort.
    12. Talks excessively.
    13. Loses things necessary for tasks or activities.
    14. Blurts out answers before questions have been completed.
    15. Is easily distracted.
    16. Has difficulty awaiting turn.
    17. Is forgetful in daily activities.
    18. Interrupts or intrudes on others"

    Good reminder that it's all about child... and teacher's "attention deficit hyperactivity disorder".

    Saturday, November 06, 2004

    Tasteful selection of internet math sites

    This page is the handiwork of Fred Koch. He reviewed hundreds of internet math sites and selected those he considered the best.
    Another good place to look will be Exworthy Educational Links
    Site has a lot up to date links to Middle/High School Math,
    lesson plans for all subjects and grades, education related news and much more... Highly recommended first stop on the web!

    Something is wrong with these triangles...or is it?


    How did it happen? Dare to comment?

    Wednesday, November 03, 2004

    ...and the winner is ... news.yahoo.com

    As polls were closing across the US I was following presidential election results on the web and found out that the best site with the up to the minute detailed info was news.yahoo.com/elections/
    CNN was only distant second.
    The small sites like uselectionatlas.org and wikipedia were only third.
    I also found out interesting site that monitors blogs on the web technorati.com. It gives up to the minute picture on what is hot and what is not.
    The best prediction of the election outcome was at the strategisphere.com even so they got Ohio wrong.

    Sunday, October 31, 2004

    Two logicians

    Two perfect logicians, Sam and Peter, are told that integers x and y have been chosen such that 1 < x < y and x+y < 100. Sam is given the value x+y and Peter is given the value xy. They then have the following conversation.

    Peter: I cannot determine the two numbers.
    Sam: I knew that.
    Peter: Now I can determine them.
    Sam: So can I.

    Given that the above statements are true, what are the two numbers? (Computer assistance allowed.)

    Mathematica on The Web

    Wikipedia
    The free dictionary
    Timeline of Mathematics
    Wolfram's Mathworld
    Milestones in the History of Thematic Cartography, Statistical Graphics, and Data Visualization
    More links here!

    Importance of teamwork

    In a cliche effort to illustrate the importance of teamwork-oriented problem solving, the Boss has chained Dilbert to Carol The Secretary via wire wrapped around their wrists, as shown in the following snapshot:

    The goal is for Dilbert and Carol to unlink themselves from each other; considering what a horrible woman Carol is, Dilbert wouldn't have it any other way. The wire is unbreakable, and as much as Dilbert would like to saw off Carol's limbs, that's against company policy. How can Dilbert and Carol get away from each other?

    Thursday, October 28, 2004

    Math Test at BrainBench.com

    I used BrainBench in the past to refresh and prove my IT skills.
    So I decided to check my Math skills too and it's free!
    To my satisfaction did pass it from the first run. Problems are rather simple but time is very limited 45 to 60 seconds. If you have good feeling of the numbers test is easy, but if you need to actually do the math you will fail it because of the time limitations. Great test to wake you up!
    Here is my certificate!


    The World of Math Online

    Yet another great place for:
    Algebra Worksheets - Generate your own algebra worksheets to print and use. Includes many options and types of equations, systems, and quadratics.
    Free Homework Help
    Puzzles, games, and cool math for the classroom.

    Saturday, October 23, 2004

    Teacher resume for career changer

    Samples from professional resume services
    from CA
    from NY

    Teacher Forums on WWW

    Teachers.net
    Florida Teacher to Teacher
    A to Z Teacher Stuff
    Classroom Management

    Incredibly useful teach-nology.com !

    site offers FREE access to 27,300 lesson plans, 5,900 printable worksheets, over 200,000 reviewed web sites, rubrics, educational games, teaching tips, advice from expert teachers, current education news, teacher downloads, web quests, and teacher tools for creating exciting classroom instruction.

    Gold Membership allows members to download thousands of valuable resources including: activities, 6,560+ worksheets, 281 complete teacher workbooks, PowerPoint® templates, Excel® templates, Word® templates, web graphic sets, music loops, and sound effects.

    Platinum Membership allows members to make custom puzzle, rubrics, lesson plans, math sheets, graphic organizers, timelines, and language arts worksheets. Members can save their work on site servers to be accessed and edited at a later date.

    ExamBuddy aka Silver membership allows members to create: 40+ online activities, flash learning games, online quizzes, online calendars, printable tests, class web pages, electronic newsletters, learning units, class surveys.

    One can have it all with Trilogy membership


    Also highly recommended

    Teachers.net
    Lesson Plans arranged according to the NCTM Principles and Standards for School Mathematics

    Mathematics National Learning Standards

    Some Examples
    Case studies from teachers about implementing standards. (NCREL)
    A working draft from NY
    Lesson Plans

    Friday, October 22, 2004

    First Days of School! Classroom Management! Discipline!

    I'm really glad I found this website! Here are Common Mistakes!

    * Don't Smile 'Till Christmas: Becoming an effective teacher does NOT equal being mean! Students want structure, want to be able to feel comfortable, safe and to know what is expected of them. Refusing to smile does not insure that students will behave or that they will want to learn.

    * I Want to Be Their Friend: It is great that you love students and want to be close to them. You may be loving, caring, friendly and sensitive, but do not set a goal to be a friend. They need you to be an adult role model that they can admire and look up to. You are setting yourself up for disaster if this is how you approach your classroom.

    * Start the First Day of School with an Activity: Most new teachers are so excited about content and having the students engaged in learning that they forget to spend time teaching students the rules and procedures. The first week of school, elementary or secondary, should be spent getting students accustomed to your expectations for the classroom. Teach them the rules and policies, practice them and review them. You can not spend too much time on this. You will not regret the "lost time."

    Also recommended Discipline without Stress® Punishments or Rewards by Dr. Marvin Marshall

    collection of links for new teachers

    Quote:
    "I DID NOT CREATE any of these websites;
    I only COLLECTED & ARRANGED the URLs.
    I hope you find these teaching websites useful."

    Wednesday, October 20, 2004

    The Null Set

    Nice site! Plenty of Mathematical puzzles from Princeton Math Club.

    Wednesday, October 13, 2004

    School Math on the Web

  • General Mathematics Sites

  • Online Help, Tutoring and Other Services

  • Before Calculus: Arithmetic and Algebra

  • Geometry

  • Calculus

  • Beyond Calculus

  • Calculators

  • Mathematics Software, Computer Algebra Systems and Java Applets

  • Mathematics Journals on the Web

  • Miscellaneous Mathematics Related Sites

  • A few good problems

    Gradebook Software

    Gradekeeper works together with
    StarQuiz
    to make it easier to give tests and have the results added to your gradebook
    Edline and School Center to make it easy to give parents and students secure access to grades online.

    Terri Husted's Homepage page for New (And Not So New) Math Teachers

    How to Start Making Connections
    A Clear Lesson
    Classroom Management
    Resources for New Math Teachers
    Multicultural Mathematics
    Other Professional Suggestions
    Most Loved Problems
    Math Myths
    Great Sites for Math Teachers
    Cool Science Sites
    Best Elementary Sites
    Guidelines for Using the Internet
    Homework and Assessments
    Tons of Data for Statistics Lessons
    Math and Science Internet Lessons
    Links for Internet Lessons
    Math Ties and Math Detective Workbooks to Order
    Awards This Page Has Received

    Tuesday, October 12, 2004

    Can Math Help in Terror War?

    Order theory, a branch of abstract mathematics that deals with hierarchical relationships, could be applied to the war on terrorism.

    EarthBrowser for armchair globe-hopping

    • Detailed Earth Map
    • Weather Forecasts around the globe
    • Cloud Animations
    • Hundreds of live webcams updating regularly
    • Volcanoes
    • Live Earthquakes
    • Tectonic plate boundaries
    Great for curious child!!!

    Sunday, October 10, 2004

    Unauthorized Teaching Materials

    These materials meant to seduce students into being curious about science and about everything else.

    Sandwich falls by oil downward at the worst posible time.

    The team of a mathematician, a psychologist and an economist put into mathematical terms what we all knew:
    that things don't just go wrong, they do so at the most annoying moment. The formula,
    ((U+C+I) x (10-S))/20 x A x1/(1-sin(F/10)),
    indicates that to beat Murphy's Law you need to change one of the parameter:
    U for urgency,
    C for complexity,
    I for importance,
    S for skill,
    F for frequency and
    A for aggravation, default value 0.7
    In the researchers' own words:
    "If you haven't got the skill to do something important, leave it alone.
    If something is urgent or complex, find a simple way to do it.
    If something going wrong will particularly aggravate you, make certain you know how to do it."
    Here is how to use formula:
    The equation has seven steps to forecasting a potential Murphy's Law moment, so you can work out which factors you need to change to avoid it:
    1. Rate the urgency, importance and complexity on a scale of one to nine and add the three figures together.
    2. Rate from one to nine how skilled you are at the task, then subtract this from 10.
    3. Multiply answers to 1 and 2 and divide by 20.
    4. Rate from one to nine how frequently you perform the task and divide this by 10.
    5. Rate the sine (or sin) of your answer to step 4 and subtract this from 1.
    6. Divide 1 by your answer to step 5.
    7. Multiply your answer to step 3 by 0.7 and multiply this by your answer to step 6, and that's your Murphy’s Law rating.
    The closer to 10 it is, the higher your risk of falling victim.
    Slashdot.org
    Sod's Law: It will go wrong at the worst posible time.
    The correct, original Murphy's Law reads: “If there are two or more ways to do something, and one of those ways can result in a catastrophe, then someone will do it.” Murphy's Law
    “Finagle's Law of Dynamic Negatives” usually rendered “Anything that can go wrong, will”.Finagle's Law
    Wikipedia

    Friday, October 08, 2004

    Electoral Vote Predictor 2004: Kerry 280 Bush 239

    Here is something that is not directly related to my teaching
    inspiration but it definitely put things into context...
    Electoral Vote Predictor 2004: Kerry 280 Bush 239