• 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: Working with Ten Frames 0–5
  • Part 2: Working with Ten Frames 0–10
  • Part 3: Many Ways to Show Numbers
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 3

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

• Lesson 4

  • Part 1: Combining Two Parts and Finding the Whole
  • Part 2: Combining Three Parts and Finding the Whole
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 5

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

• Lesson 6

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

• Lesson 7

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

Lesson 4

Pocket Parts

Est. Class Sessions: 2

Daily Practice and Problems

X

Teacher Notes

X

Display several triangles that differ in size, orientation, and length of sides. Make and display a list of student responses.

Possible responses:

all have three sides

all have three corners

some have a long side

some have sides that are all the same

some have sides that are almost the same

I. What Do You Know about Triangles?

List all the things you know about triangles.