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Grade 7 Unit Resources

Preparing to Teach

7-1 Shapes and Designs

  • Focus Questions
  • Scope and Sequence
  • What's Problem 1.1 All About?
  • Student Work from Shapes and Designs, Problem 2.2: Angle Sums of Any Polygon
    •   View Student Work
    • This student work can serve as a guide for planning, teaching, assessing, and reflecting on the mathematics of this Problem. The work can be downloaded for teachers to examine during planning time, for use in a collaborative meeting, or for use in professional development activities.

      Also, this student work can be used with students as an extension of the thinking already presented in Problem 2.2. This strategy can deepen students understanding of polygons and their shapes. It is interesting to note that the different examples of student thinking presented in Problem 2.2 may have prompted one student to explore the possibilities of other strategies.

  • Student Work from Shapes and Designs, Problem 2.3: The Bees Do It
    •   View Student Work
    • A CMP teacher shared photos of students working during the Explore of the lesson. Students were testing to see which regular polygons tessellate. They were recording their results on chart paper Using the results, the students and teacher discussed how angle measures in the polygons can explain the tiling properties.

      • Students in the photos were exploring these questions from the teacher:
      • Which regular polygons will tile a flat surface with no gaps or overlaps?
      • Which polygons will not do so?
      • Why do some shapes tile and others do not?


      The student work photos provide a glimpse into the CMP classroom during the Explore phase of the lesson. In particular, the photos show the active role of the student in the process constructing their knowledge around well-defined challenges. 

  • Using Realize/Dash Activities - Bee Dance Activity, Tessellations, Virtual Polystrips, Quadrilateral Game
  • Why do bees build hexagonal honeycombs? - External video about the hidden mathematical rule behind one of nature's most perfect shapes
  • Teacher and Classroom Connection Videos

7-2 Accentuate the Negative

7-3 Stretching and Shrinking

7-4 Comparing and Scaling

7-5 Moving Straight Ahead

7-6 What Do You Expect?

7-7 Filling and Wrapping

7-8 Samples and Populations