11_27_06

Whole-class story problem:

"The fruits, vegetables, and grains group was making apple cider. They used 7 green apples and some red apples. Altogether they used 10 apples. How many red apples did they use?"

Identify operation and solve, write equations.

Small group:
Put out a group of 18 pennies in a pile (so students can't count them). Ask them to estimate how many there are and write them on a white board. "Let's find out how many groups of tens and how many extras there are." Use a penny strip to lay the pennies on it and see how many groups of ten there are. Stop at about 9 and ask if anyone wants to change their estimate. Finish group of 10 and count the extras. "How many groups of 10 are there? How many extras? How many pennies are there?" "We write the number 18 like this: 1 because there is one group of 10, and 8 because there are 8 extras." Check their estimates to see who was close.

Students play Snap It with 10 cubes for about 15 minutes in pairs (if 10 is too hard, try 6 or 7).

Students work on solving one story problem and showing their work on paper.

Large group:
Work on solving double-digit addition problem and show work.

Share work and talk about how to show work.