Presented by:

Ihor Charischak
ihor@clime.org

CLIME-Council for
Technology in
Math Education
http://clime.org

Sign in for
Today's workshop.

See list of attendees

CMDB75 Activities
Version 2 in the works -
You can help!

Below are some highlights:

Mind Reader

Great Green Globs

Stock Market Game

Great sources for
Microworld-like Activities

NCTM's Illuminations

Calculation Nation

Library of Virtual
Manipulatives

Gizmos

Scratch math projects

Ihor's scratch
projects


1 Family Fractions
It's time for all fractions to return to their home pad. Keep clicking on the cards until none of them move.
Lesson: http://www.ciese.org/ciesemath/number_town.html
Scratch app: http://scratch.mit.edu/projects/2965025/
Weird Number - http://www.youtube.com/watch?v=pSO66sL9SmY


2
Spiros
http://dmcpress.org/cmdb75/spiros/spiros_student
Draws different Spirolaterals. See if you can predict what kind will come up based on the three numbers. There are three types of spirolaterals - Gloop, Whimsy, and Wumpus. Can you separate them into these groups according to number?
Scratch app:
http://scratch.mit.edu/projects/2970657/


3
Billiard Paths (Paper Pool)
http://ciese.org/ciesemath/billiards_s.html
Here you will find an unusual billiard table. The dimensions are determined by the numbers on the sliders. Your Challenge: See if you can come up with a way to predict (1) what the number of touches will be for any given size billiard table and (2) which corner the ball will end up in.
Scratch app: http://scratch.mit.edu/projects/14855059/
tracking sheet: http://dmcpress.org/confs/scratch12/ds_331.html




Is this a Fair Game? Rolling Dice 1, 2 and 3
Scratch app 1: http://scratch.mit.edu/projects/15331265/

Scratch app 2: http://scratch.mit.edu/projects/15220604/

Scratch app 3: http://scratch.mit.edu/projects/15330655/

4 Slope
http://dmcpress.org/confs/scratch12/pdfs/slope.pdf
A much simpler version of Green Globs. The object is to get the highest score with the least number of lines drawn. Scoring is as follow: 1 pt for 1 glob; 2 pts for the 2nd glob; 4 pts for the 3rd glob; 8 pts for the 4th and 16 pts for the 5th glob. All you do is enter the slope number (m) and the y-intercept (b) and the line gets drawn hopefully through many globs.
Scratch app: http://scratch.mit.edu/projects/11035402/


5 Jinx Puzzle
http://dmcpress.org/cmdb75/jinxpuzzle
Pick a number,  Add 11, multiply by 6, subtract 3, divide by 3, Add 5, Divide by 2, Subtract the original number. Why is this called the Jinx puzzle?
Solution

Scratch app: http://scratch.mit.edu/projects/2964940/

6 Power Cards - A mathematical puzzle
http://math.rice.edu/~lanius/pro/power
Pick a number from 1 to 31. Watch the computer figure what number you chose through the magic of binary numbers.

Scratch app: http://scratch.mit.edu/projects/ihorc/2962895


7 Fraction Darts
http://ciese.org/math/activities/fractiondarts/FractionDartsWorksheetGame.html
The object of the Fraction Darts challenge is to "pop" balloons located on a number line between 0 and 1. The darts are "thrown" by entering a number in fractional form.  Here is a glimpse of a game in progress. Two darts (5/8 and 3/4) have been thrown so far. Notice that 3/4 is too small and 7/8 is too big. (See also Decimal Darts)
Watch these 5th graders play Darts with a Smartboard. [link]

Fractions in Number Town & Elizabeth, NJ & Number Town Applet

Scratch app: