10/15 Lesson 2.2.4 Multiplication as Repeated Addition

1.  Warm-up:

Write at least 2 expressions (a mathematical sentence) to represent each of these diagrams.

Hint:  Think about using ( ) to represent groups

2.  Announcements:

• Ch. 2 Benchmark Quiz tomorrow will include:
• Addition of integers (positive and negative)
• Portions webs (converting between decimals, fractions, percents)
• Win-a-Row tournament at lunch today! Starts promptly @ 12:25. Bring a friend.

3.  Lesson 2.2.4 Multiplication as Repeated Addition

• Objectives:
• I will show multiplication as repeated addition using diagrams/pictures
• I will solve problems involving the Distributive Property
• Multiplying (making groups) using Integer Tiles
• 4(-2)
• 3(-3)
• 2(-4 + 3)
• 3(1 + (-2)) + -3
• Problems 74 through 76 in teams
• Mini-lesson: Distributive Property
• Problem 77 in teams

Homework:  2.2.4 R/P (answers in GC)