• 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
  • Extension
  • Answer Keys

• Lesson 2

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

• Lesson 3

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

• Lesson 4

  • Part 1: Demonstrate the Lab and Draw the Picture
  • Part 2: Collect and Graph the Data
  • Part 3: Analyzing the Data
  • Summarizing the Lesson
  • Homework and Practice
  • Extension
  • Answer Keys

• Lesson 5

  • Part 1: Make It Balance
  • Part 2: Make 99 Game
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 6

  • Part 1: Review Telling Time to the Nearest Five Minutes
  • Part 2: Elapsed Time
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

Lesson 5

Compute with Mass

Est. Class Sessions: 2

Daily Practice and Problems

X

Teacher Notes

X

Use DPP item R to practice the addition facts in Group F and the related subtraction facts.

1. Possible story: Sara collected 9 cents on Monday and 8 cents on Tuesday. How much money does Sara have?
2. 17; Possible strategy: 8 + 8 = 16 so 8 + 9 is one more, or 17.
3. Possible story: Diana has 17 balloons and sells 8 of them. How many does she have left?
4. 9; Possible strategy: I thought about the number line. 17 − 7 = 10. I need to take one more away to subtract 8. So 17 − 8 is one less than 10, or 9.

Q. Story Problems

1. Tell your neighbor a story about 9 + 8.
2. Show or tell how to solve 9 + 8.





3. Tell your neighbor a story about 17 − 8.
4. Show or tell how to solve 17 − 8.