Number Walls

About this app

A number wall you can touch: every brick is the sum of the two below it. In build mode the child types numbers into the bottom row and watches the wall fill upwards with animations; dragging two base bricks onto each other swaps them — and the top brick reveals that the middle brick counts twice. Six puzzle levels with fewer and fewer given bricks refute the misconception that walls can only be solved bottom-up: using minus, gaps can be deduced backwards from the top brick.

Subject: Elementary · Maths

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• Multiplication arrays
• Times Table Trainer
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A VisuApp by heyprof: interactive, free in your browser, no sign-up. What is a VisuApp? · All apps