Physical Materials:

• Colored pencils
• Paper (plain or graph)
• Base ten blocks 
• Interlocking cubes

Digital Materials:

• Math Activity: Exploring Addition Strategies Interactive Slide Deck
  
• Math Activity: Exploring Addition Strategies Google Doc
  
• Virtual Number Lines
  
• Virtual Manipulatives

Instructions:

1. Watch the introduction video below.

3. Complete strategy 1(b). As you explore this strategy, think about the connections you see across the different representations and descriptions.
   
4. Choose either 1(c) or 1(d) to complete. Again, make sure you take time to consider the connections across the different representations and descriptions.
   
5. When you are finished, watch the synthesis video below.

Optional Extension:

If you would like to take a deeper dive, watch the second video with Mike and Marta analyzing the different approaches teachers took.