Reflections 2

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SWBAT understand reflection across any horizontal or vertical line.

Big Idea

Can you reflect objects without the geomirrors? Push kids to apply the idea of equal distance from the line of reflection.

Warm Up

10 minutes

Each day, students complete a warm-up that usually consists of spiraling the previous day's material, in addition to older material.  Warm-up problems also sometimes extend lessons that students have encountered before to more unfamiliar contexts.

For a video narrative about how I structure each lesson, and how the warm-up fits in, click here.

Play of the Day

40 minutes


10 minutes

I like to review Problem #3 during the huddle, to shine a light on what happens when the line of reflection actually cuts through the shape to be reflected.  What does this look like with the Geomirror? Basically, it flips it around, but if you very precisely apply the idea of equal distance from the line of reflection, it yields the shape.  It's a pretty cool demonstration of how applying the properties here yields a precise reflection.


15 minutes

Homework is to be completed at home and should take students approximately 15 minutes.