Exploding Dots

An excellent activity created by James Tanton (@jamestanton). You can find video tutorials and resources here. It was also the activity for the first Global Math Week, and a virtual environment was created for it here.

I created this interactive version to use to demonstrate the ideas in Exploding Dots.

Machine Name: ←	Unknown Machine
Show Dots	Show Numbers
Remove Headings	Show Headings

Add Extra Box to left

Explode all

Cancel all

Unexplode all

Unexplode and Cancel all

Add dots Add dots

Add antidots (subtract) Add antidots

Multiply by Multiply

Divide by Add DotAdd Antidot Add DotAdd Antidot Add DotAdd Antidot

Reset