iPhone Screenshots
Description
Teaches arithmetic using a double-sided . Recognizes quantities through subitizing and visual strategies. Supports learning by grouping numbers in fives and tens. Enables trading up to thousands. Includes lessons for mathematical facts.
Cotter AL Abacus, used with the RightStart™ Mathematics program, now available on your iPhone and iPad! This abacus will teach, not calculate like the Japanese and Chinese abacus, while using subitizing (quantity recognition) and visual strategies to support learning and understanding. Perfect for visual learners!
This unique double-sided abacus is grouped in fives and tens for quick recognition of quantities. The second side of the abacus focuses on trading to the thousands.
Learn the facts easily by:
* visualizing quantities,
* minimizing counting, and
* developing mental strategies.
Those learning arithmetic with the Cotter AL Abacus have a better understanding of basic concepts and need less time to master arithmetic. Although children do enjoy using the abacus, it does not become a crutch. Stan, age 5, was asked how much is 11 plus 6. He replied, “17!” When he was asked how he knew, he replied with a grin, “I’ve got the abacus in my mind.”
App has links to sample addition, subtraction, multiplication, and division lessons as well as detailed use information.