Add or subtract fractions in a graphical
way. It's a simple application of the
first graphical multiplication trick. In
fact, you will combine three...
A nice physics experiment to see! The
compression on the sugar crystal,
creates a charge separation inside it (a
phenomenon called piezoelectricity)....
How to transform a multiplication into a
simple counting of points through the
drawing of a square shape (original
analogy was with a stool). It works...
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mr. bean