The purpose of this activity is for students to represent numbers within 100 using drawings, words, numbers, expressions, and equations. Students choose their favorite number and represent this number in different ways. In the next activity, students participate in a Gallery Walk to see their classmates’ representations.

• “How can you show the number using connecting cubes?”
• “Split the collection into two parts. How many are in this part? How many are in this part? What expression can you write?”

• “Talk to your partner about whether your page is easy to read and understand. You can revise your page based on your partner’s feedback.”

The purpose of this activity is for students to interpret representations of numbers up to 100. Students participate in a Gallery Walk and find representations that are the same and different from their own. If time permits, students can return to their own work and revise based on what they saw in their classmates’ work. As students look through each others’ work, they discuss how the representations are the same and different and can defend different points of view (MP3).

• “How are the representations of your number the same as your classmates’? How are they different?” (We all wrote expressions. Some students made more drawings than I did. I didn't represent my number with all ones, but someone did that for their number.)
• “If you’d like, you can add to or revise the representations on your page.”

The purpose of this activity is for students to choose from activities that offer practice adding and subtracting within 20 and writing numbers up to 120. Students choose from previously introduced stages of these centers:

• Compare
• How Close?
• Write Numbers

• “How was your center work helpful today?”