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Continuing the Conversation

Continuing the Conversation. Continuing the Conversation. Cathy Fosnot. Minilessons for Addition and Subtraction. A warm–up mental math string. 92 + 39 99 + 32 139 + 94 134 + 99 199 + 34 129 + 97. What strategy does this string support? What big ideas underlie this strategy?.

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Continuing the Conversation

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  1. Continuing the Conversation

  2. Continuing the Conversation Cathy Fosnot

  3. Minilessons for Addition and Subtraction

  4. A warm–up mental math string • 92 + 39 • 99 + 32 • 139 + 94 • 134 + 99 • 199 + 34 • 129 + 97 • What strategy does this string support? • What big ideas underlie this strategy?

  5. Quick Image Billboards (K-1)

  6. Small Group Discussions • What strategies would you expect to see? • How would you represent them?

  7. The Landscape of Learning

  8. Let’s go to a classroom… Cdrom, minilesson folder (3rd), first page video clips 18, 19, and 20

  9. The Landscape of Learning

  10. Back to the classroom… second page video clips 3, 5, 6 #3 (3 on the top, 5 on the bottom) #5 (2 on the top, 6 on the bottom) #6 (is there another way the kids could trick me?)

  11. Grade 2 • 43 + 10 • 43 + 20 • 43 + 19 • 68 + 23 • 39 + 54 • What’s the focus of the string? • A) compensation • B) splitting • C) jumps of tens and adjusting • D) moving to a landmark number

  12. Grade 2 • 50 + 50 • 49 + 51 • 25 + 25 • 26 + 25 • 32 + 28 • 49 + 53 • What’s the focus of the string? • A) compensation • B) splitting • C) doubles +/- • D) moving to a landmark number

  13. Grade 2-3 • 192-40 • 192-43 • 378-39 • 247 – 29 • 371 - 19 • What’s the focus of the string? • A) constant difference • B) splitting • C) doubles +/- • D) taking jumps of ten backwards and adjusting

  14. Back to the classroom… • sixth page 192-40 • video clips 76, 77

  15. Back to the classroom… • Seventh page • video clip 79

  16. Grade 2-3 • 192-40 • 192-43 • 378-39 • 247 – 29 • 371 - 19 • Here’s the string again. • Would you continue with the 4th problem?

  17. Revising in action How would you finish the string?

  18. Michael’s revisions 192-40 192-43 378-39 378-40 371-19

  19. Grade 2-3 146-12 272-14 283-275 (clip 83) Here’s the first part of a string that Michael does on another day.

  20. Revising in action What conversation would you have?

  21. Have fun with minilessons….

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