Drexel dragonThe Math ForumDonate to the Math Forum

The Math Forum Internet Mathematics Library

The Doctor X Amazing Griddable Multiplication Contraption

_____________________________________
Library Home || Full Table of Contents || Suggest a Link || Library Help
_____________________________________

Visit this site: http://treeblurb.com/doctorx

Author:Gordon Anderson
Description: Click a color from the left of this 10×10 JavaScript array, then paint the grey boxes with it to illustrate how rectangular area, multiplication, and the distributive property interrelate. As products color the grid, the column on the left dynamically keeps count of the 100 total uncolored and colored boxes. Click the "x" button in the lower right to reset and start over.

Levels: Elementary
Languages: English
Resource Types: Web Interactive/Java
Math Topics: Multiplication, Patterns/Relationships

[Privacy Policy] [Terms of Use]

_____________________________________
Home || The Math Library || Quick Reference || Search || Help
_____________________________________

© 1994-2014 Drexel University. All rights reserved.
http://mathforum.org/
The Math Forum is a research and educational enterprise of the Goodwin College of Professional Studies.The Math Forum is a research and educational enterprise of the Drexel University School of Education.