Are These Right?

This Are These Right? activities & project also includes:

Is that a right triangle or a wrong triangle? Young mathematicians look at eleven different shapes and use a measuring tool of their choice to determine which triangles have right angles. Consider cutting out sets of the shapes to provided to young scholars who request them. Allow for a follow-up discussion in which different approaches to solving the problem are shared.

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CCSS: Designed
Pros

  • Includes a variety of different triangles
  • Activity clearly addresses the ability to identify right triangles
  • Students are free to develop unique approaches to solving the problem
Cons

  • The included shapes are relatively small, making angle measurement difficult
Common Core