Number Explorations Two Ways to Count to Ten

Number Explorations: Two Ways to Count to Ten S

https: //www. youtube. com/watch? v=ue. Xoe. Ao. Oc 1 s

Ways to Count What are the different ways you can count to ten? By 1’s: 1, 2, 3, 4, 5…. 10 By 2’s: 2, 4, 6, 8, 10 By 5’s: 5, 10 By 10’s: 10 There are 4 ways to count to 10: 1, 2, 5, 10

What about 12? What are the different ways to count to 12? Factors By 1’s: 1, 2, 3, 4, 5… 12 Multiples By 2’s: 2, 4, 6, 8, 10, 12 By 3’s: 3, 6, 9, 12 By 4’s: 4, 8, 12 By 6’s: 6, 12 By 12’s: 12

Independently. . . Task: Choose six numbers from 1 – 36. Determine all the different ways to count to each number. Example: 10: 1, 2, 5, 10 (4 ways) Questions to Consider: S What numbers did you choose? Why? S What other numbers are you curious about? S What observations have you made. I notice. . . I wonder. . .

Investigation (in pairs) S Investigate all the numbers from 1 to 36. S Find all the different ways you can count to each number S Decide on a way to organize and record your work to keep track of: 1) each number, 2) the ways to count to it, and 3) the number of ways Keep track of your thinking on paper: S What observations have you made? S What predictions can you make based on what you have done so far? S What other numbers are you curious about?

Focusing and Generalizing: Use newsprint and markers We explored. . . We noticed. . . (Conjecture + Examples) We think. . . We wonder. . . We predict. . .

Summary: Sharing your findings As you listen to others, think about whether… S You agree or disagree S You have anything to add S You have a question S You can make a connection

Written Reflection (Exit Ticket) S What is one new idea that captured your interest in today’s investigation? Or, what is something you learned today? S What questions do you still have?