10-2-06

BEGINNING:

Whole-class subtraction problem about losing teeth: (Joseph had lost 12 teeth, but the Tooth Fairy only took 5 of them!)

MIDDLE:

Teach Paper-Clip Combinations to everyone for the number 9

Choices:

Some choose between Paper Clip Combinations and Compare. Some choose between Paper Clip Combinations, Difference Compare, and Snap It!

Pull group to work on concept of “less.” “I have a tower of 6 cubes. Please make a tower that has //less// than 6.” etc.

END:

Look at combinations for 9: what do you notice?