Physical Materials:

• Building a System of Tens Casebook
• Base-10 blocks
• Interlocking cubes
• Colored pencils
• Graph paper 

Digital Materials:

• Math Activity 1: Multiplication of Decimals Interactive Slide Deck
  
• Math Activity 1: Multiplication of Decimals Google Doc
  
• Virtual Manipulatives

Instructions:

1. Watch the introduction video below.

2. Read Case 28 and then work through Parts 1-3.
   
3. Watch the Synthesis Overview before working on Part 4.

4. Work on Part 4 and then watch the following two videos to make sense of the procedure for multiplying decimals.

5. Watch the Synthesis video below. 

(Optional) Extended Synthesis:

In this video, Mike and Marta discuss the strategy from the Synthesis Video in greater detail.