Reflection: Dig In! Day 1 - Section 3: Categorizing the Shapes


With the first class in which I tried this lesson, I allowed each group to choose whatever category they wanted, and this was a mistake! I ended up with four out of the five groups choosing number of sides.  As a result, the gallery walk and discussion were not terribly enlightening and I ended up with extra time at the end of the period. In my remaining classes, therefore, I circulated around the room and actively kept track of what categories were being used. When one group chose a category, I took that characteristic "off the table," so that the remaining groups had to choose a different one.  

The wealth of categories in the remaining classes was awesome.  Instead of a gallery walk, I had each group stand with their poster and talk about what they had chosen and any discoveries or observations they had made.  It worked beautifully, and the timing of the lesson was perfect!

  Need to Keep Track of the Categories Chosen
  Need to Keep Track of the Categories Chosen
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Dig In! Day 1

Unit 1: Tools of Geometry
Lesson 1 of 7

Objective: This lesson, the first in the course, SWBAT activate prior knowledge about triangles and polygons and engage in group work.

Big Idea: Want to find out how many unique shapes can be created using four congruent isosceles right triangles? Dig in!

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20 teachers like this lesson
Math, Geometry, Triangles, hypotenuse, Isosceles triangle, isosceles right triangle, legs, Polygon
  100 minutes
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