• Unit Overview

  • Letter Home
  • Unit Preparation
  • Mathematics in this Unit
  • Assessment in this Unit
  • Key Assessment Opportunities Chart
• Daily Practice and Problems
• Home Practice

• Lesson 1

  • Developing the Lesson
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 2

  • Part 1: Exploring the Tangram Pieces
  • Part 2: Area of the Tans
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 3

  • Part 1: Discuss Strategies for Constructing a 7-Piece Square
  • Part 2: Building and Analyzing 7-Piece Tangram Puzzles
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 4

  • Part 1: Geometry Concepts
  • Part 2: Building with Two Triangles
  • Part 3: Building with Three Triangles
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 5

  • Developing the Lesson
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 6

  • Part 1: 3-D Shape Hunt
  • Part 2: Using Properties of Shapes
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 7

  • Part 1: Making Shapes
  • Part 2: Manipulating Shapes
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 8

  • Part 1: Analyzing Faces of 3-D Shapes
  • Part 2: Drawing 3-D Shapes
  • Summarizing the Lesson
  • Homework and Practice
  • Extension
  • Answer Keys

• Lesson 9

  • Part 1: Analyzing Properties of 3-D Shapes
  • Part 2: Writing Geometry Riddles
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

Lesson 3

Tangram Puzzles

Est. Class Sessions: 2

Daily Practice and Problems

X

Teacher Notes

X

TIMS Bit

Answers will vary. Possible responses are shown.

1. 
2. 
3. 

G. Triangles, Hexagons, and Pentagons

Here is a regular triangle, a regular hexagon, and a regular pentagon. In a regular shape, all the sides are the same length and all the angles are equal.

1. Draw a triangle that is not a regular triangle.
2. Draw a hexagon that is not a regular hexagon.
3. Draw a pentagon that is not a regular pentagon.