For Your Mathematics Teachers: The World Of Mathematics

Link: Mathigon | The World of Mathematics | An Interactive Mathematics eBook

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Online. Interactive. Entertaining. This is what textbooks will look like in the future. The World of Mathematics showcases how fascinating and beautiful mathematics can be, by explaining some of the most interesting mathematical ideas to children and the general public. Diagrams, videos, slideshows, problems and interactive games let the content come to life and make learning mathematics an entertaining and engaging experience.

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Section headings:

Symmetry and Space
Numbers and Patterns
Combinatorics and Logic
Probability and Games
Motion and Matter