TV on a Rolling Cart

The Valentine's Day Problem

From Peg + Cat · 2015

The Valentine's Day Problem
13 minK1st2ndMath
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Summary

Peg and Cat race to make enough valentines for every party guest — plus two surprise visitors — by counting their cards two at a time and folding them into symmetrical shapes.

Viewer safety

All ages
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Teaching resources

Discussion questions

Discussion

Peg and Cat count valentines in pairs and fold them into matching, symmetrical shapes.

  1. Count by twos with Peg: 2, 4, 6, 8… what comes next?
  2. A heart folds so both sides match — that's symmetry. What other shapes are symmetrical?
  3. Why is counting by twos faster than counting one valentine at a time?

Quick work-a-long

Vocabulary: count by twos, pair, even, shape, symmetry, fold in half.

Try it: Count a set of objects by twos. Then fold a paper heart in half to see the two matching (symmetrical) sides.

The Valentine's Day Problem — TV on a Rolling Cart