The cosmic calculator course offers a complete system of mental mathematics which can be taught in a holistic way. The course consists of three textbooks, an answer book, and a teacher's guide. the course is aimed at 11-100 years old, though some of it is very suitable for children from 8 years old.
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The cosmic calculator course offers a complete system of mental mathematics which can be taught in a holistic way. The course consists of three textbooks, an answer book, and a teacher's guide. the course is aimed at 11-100 years old, though some of it is very suitable for children from 8 years old.
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