Reflection: Developing a Conceptual Understanding Looking at the Similarities and Differences - Section 2: Discussion How are the Similar? How are They Different


During this discussion, I wanted to not only check for students ability to describe the attributes of each shape but also check for their understanding of the vocabulary and their ability to use the correct mathematical vocabulary in their discussion.  The first two clips a examples of students describing how the two shapes are similar.  The first student talks about the shapes both having vertices and straight lines.  The second student refers to the sides being straight. The third clip demonstrates two students discussing how the shapes are different.  The last student in this clip is trying to describe how the triangle has diagonal lines but obviously doesn't have that term in her vocabulary.  I followed up her comment with a discussion about that term.

  Using Vocabulary
  Developing a Conceptual Understanding: Using Vocabulary
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Looking at the Similarities and Differences

Unit 9: Shapes Within Shapes
Lesson 8 of 10

Objective: SWBAT: Identify the differences between a square and a triangle. SWBAT: Identify the rule by which a group of shapes is categorized.

Big Idea: La, La, La, La, La, sing a happy song! You will be signing like a Smurf as students use their new founded knowledge of shape characteristics to participate in a whole group discussion and to successfully participate in geometric learning.

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Math, Geometry, One-Dimensional Geometry, 1st Grade, comparing shapes
  78 minutes
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