Geometry and Hands On Problem Solving: Triangles, Quadrilaterals and Pentagons,

Grade Levels
4th - 7th
Formats Included
  • PDF
10 pages
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This is an activity that I created for my teacher to do during a weeklong overnight trip, but I thought it would be great to use in the classroom as well. There are 20 different clue cards that ask students to look at a set of 7 geometric shapes and pick out two that can be combined to make a third shape that has specific properties. The students sketch the solution on an answer sheet, and name the shape they created.

This activity covers acute, obtuse and right triangles, as well as equilateral, right and isosceles. Students also solve problems having to do with a variety of quadrilaterals, including rectangles, parallelograms, trapezoids and kites. There are also some challenges where students construct pentagons.

There are 20 different "short" challenges in this set: simply print them up, cut them out, put in a jar and have students select them at random and record their answers. There is no need to print up a separate worksheet for each student: all they need is an answer sheet to record their work.

This activity uses a 7 piece puzzle called "Van Hiele Tiles," which you can print up on card stock and have student cut out, or you can buy a classroom set of 1/8" laser cut acrylic tiles at my online store. Purchasers of the class set will also receive a free copy of my 60 page book on using Van Hiele Tiles to teach geometry through problem solving.

This activity also makes an excellent assessment tool for determining what your students know about attributes and names of geometric shapes.
Total Pages
10 pages
Answer Key
Teaching Duration
90 minutes
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