Interview with Bronna Silver, Grades 2/3 teacher, St. Andrews PS, TDSB
See the coding environments, lesson plans, stories, and other resources for this lesson at researchideas.ca/sym.
Use the tab above to see the Symmetry Side-By-Side.
Discuss this on TVO’s TeachOntario [coming soon].
1. We can see symmetry as a transformation: a transformation that leaves a shape unchanged. And we can see it as a permutation.
2. We made connections to angle measurement, to fractions, to organized lists, & to probability.
3. I was surprised how students responded, and how they engaged.
4. In a coding environment, students have an opportunity to show what they can do.
5. Introducing new ideas about symmetry in a story setting helped make learning more meaningful and memorable.
6. Students shared their learning at home, and parents sent feedback and comments to the teacher.
7. Symmetry + Coding song written and performed by grade 2/3 class.
8. Bumper symmetries: defining the rotation symmetries of the square.
9. What might happen when the 4 rotation symmetries bump onto one another?
10. Demo with code and student predictions.
11. Students work in groups to model the problem.
12. Students work with code.
Below is a lesson sequence on Symmetry using 2 different pedagogical approaches, shown side-by-side:
- the pedagogical approach on the left is fairly typical
- the pedagogical approach on the right offers a mathematical surprise
The intent is not to pick one approach over another, but to see that both approaches are of some value.
- Use the tab above to see a teacher interview and students working with symmetry
- and the coding environments and more resources.
Try these ideas in your classroom.
How do students react differently to each pedagogical approach?
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