Lesson plan

8. Composing a ten while adding ones on to a two-digit number (FP)

teaches Common Core State Standards CCSS.Math.Content.1.NBT.C.4 http://corestandards.org/Math/Content/1/NBT/C/4
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
Quick assign

You have saved this lesson plan!

Here's where you can access your saved items.

Content placeholder

or to view additional materials

You'll gain access to interventions, extensions, task implementation guides, and more for this lesson plan.

Lesson objective: Add a two-digit number with a one-digit number, sometimes composing a ten.

This lesson helps to build fluency with composing a new ten. Cubes are used here because students will be able to see that a new ten is "complete." This work develops students' understanding that when adding a two-digit number with a one-digit number, sometimes it is neccessary to compose a new ten.

Students engage in Mathematical Practice 1 (Make Sense of Problems and Perservere in Solving Them) as they determine whether or not a new ten needs to be made while playing the game. 

Key vocabulary:

  • compose
  • decompose
  • ones
  • tens

Special materials needed:

  • 10-sided dice (see additional materials for template)
  • Recording Sheet