• 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 6

Elapsed Time

Est. Class Sessions: 2

Daily Practice and Problems

X

Teacher Notes

X

First way:

27
+ 83
100
+ 10
110

Second way:
Strategies will vary.
Possible strategy:

T. Addition Seminar

Nick solved an addition problem using the following strategy:

44
+ 99
130
+ 13
143

Solve the following problem using Nick’s strategy. Then choose another strategy to solve it a second way. Use the Addition Strategies Menu in the Student Activity Book Reference section.

First way:

27
+ 83

Second way: