Instructor Lisa Ginet explains how to make tangram puzzles, an ancient Chinese game made from seven shapes cut from a square. Over 6500 different arrangements can be made from these seven simple shapes!
Why is this important?
Students often enjoy putting tangrams together to make forms that represent people or animals. Prompting students to match arrangements in silhouette form (that is, without the outline of each shape shown) is a good way for them to reinforce their spatial reasoning skills.
Shapes can be combined and separated (composed and decomposed) to make new shapes. More
Jennifer McCray, director of Erikson's Early Math Collaborative, continues her talk on some of the major misunderstandings about what goes into teaching mathematics to young students. In this section, she focuses on how children gradually develop their understanding of number and quantity.