Number Blocks (Flash)

See instructions below


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Also try Number Blocks Freeplay (HTML5)

Instructions

Just move the blocks around using your mouse.

You can select a block by clicking on it.

You can select more than one block by shift-clicking on other blocks (click on them while holding the shift key down)

You can also select blocks by drawing a rectangle on the screen surrounding them.

Once blocks are selected you can:

You can add new blocks by dragging them from the "New Blocks" box.

You can delete blocks by selecting them then pressing "Remove".

Uses

Demonstrate addition facts (example: 4+1=5), subtraction (example 5-1=4), multiplication (example 4 2s make 8), division (6 can be broken into 3 2s, or 2 3s) ... and more!

Make nice patterns: pyramids, squares, rectangles ... even shapes like cats.