Which mathematical product design innovation was specifically developed to address dyscalculia (math learning difficulties) and revolutionized accessibility in mathematics education?

The design and marketing of mathematical tools has evolved dramatically over centuries, from simple chalk and slate to advanced digital products. This transformation reflects changing educational philosophies, technological innovation, and consumer preferences. Today's mathematics products balance traditional learning approaches with cutting-edge technology. Test your knowledge about how product design has shaped mathematical education and practice throughout history.

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Number Base Blocks (Dienes Blocks)
TouchMath (multisensory numerals with tactile points)
Digital graphing calculators with color displays
Whiteboard-compatible dry erase math manipulatives