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Babakus for iPad - Addition

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Published on Feb 26, 2012

The Babakus is a calculator that combines the best qualities of the western slide ruler with those of the eastern Abacus. It's part of a method for students with dyscalculia or math disability.

When adding two numbers together, the slide rulers are used in conjunction with the counting strip for addition - the latter ranging from 0 to 9 in a green colour scheme.

REMEMBER! The same principles apply when counting with multi-digit numbers. Every operation is carried out from right to left.

Read more: www.babakus.nu

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