• 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

  • Part 1: 60 Minutes Around the Clock
  • Part 2: Relating the Movement of the Minute Hand to the Hour Hand
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 2

  • Part 1: Grouping and Counting Bits
  • Part 2: Group Bits with Skinnies
  • Summarizing the Lesson
  • Homework and Practice
  • Extension
  • Answer Keys

• Lesson 3

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

• Lesson 4

  • Developing the Lesson
  • 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

  • Part 1: Show Numbers
  • Part 2: Compare and Order
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

Lesson 2

Introduce Base-Ten Pieces

Est. Class Sessions: 3–4

Daily Practice and Problems

X

Teacher Notes

X

Encourage students to use their number lines or 200 Chart as tools to help them solve the problems.

1. Sue
2. Yes, 16 + 9 = 25
3. 6 buttons
   16 + 6 = 22

C. Blue Buttons

Use a number line, connecting cubes, or 200 Chart.

1. Who has the least blue buttons?
2. If Carl and Sue combine their buttons, would they have more blue buttons than Elaine? Show or tell how you know.
3. How many more buttons does Carl need so that he has the same number as Elaine? Write a number sentence.