Reflection: Developing a Conceptual Understanding Measuring Angles Inside Shapes - Section 3: Student Practice


While I was conferencing with this student, Measuring Angles, I realized that she needed a more concrete model to truly believe that there were two sets of congruent angles when measuring the inside angles. 

So I asked her to cut out two of the angles to see if they matched up. Here's the amazing conference that resulted: Comparing Angles

We then shared this concrete model with the rest of the class! 

  Developing a Conceptual Understanding: Congruent Angles
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Measuring Angles Inside Shapes

Unit 8: Geometry
Lesson 3 of 7

Objective: SWBAT find the sum of angles.

Big Idea: Students will take turns measuring and finding the sum of angles within a variety of shapes.

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4 teachers like this lesson
Math, protractor, supplementary angles, angles, Triangles, angles (Constructions), quadrilateral, measuring angles, adding angles, Additive Property of Angles, complementary angles, Polygon, shapes, classifying triangles
  100 minutes
student measuring
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