__Patterns__: Figures alternate, for example: right arm up, left arm up, right arm, left arm.

__Reflections__: Students love that every doll is a flipped copy of the one next to it. Technically, that's called a reflection, one of three kinds of geometry transformation students study in elementary school, the other two being rotation and translation.

__Powers of Two__: Fold the paper twice, you get four figures. Fold the paper three times, you get 8 figures. Fold four times, you get 16 figures. Every fold is a power of two of the figures.

__Multiplying fractions__: Every time you fold, the dolls become half as wide. That's a visual illustration of what it means to multiply a fraction, in this case x 1/2. Or, if the first fold divides the paper in half, and the second fold divides it in quarters.

Learn more here: Paper Doll Math

View other activities and information here:

Math Manipulatives

Geometry of Folding

Probability

Nice examples. I just recently had a post about folding towels that deals with exponents too : )

ReplyDeleteKids Math Teacher

That looks like a great site!!

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