Lesson 1

The Hour and Half Hour

Est. Class Sessions: 1–2

Daily Practice and Problems

Teacher Notes
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Students will need the Addition Flash Cards: Group D and their envelope with a paper clip. Masters are in Unit 8. Students will need their Addition Facts I Know chart from Unit 9. After students sort the cards, they should clip and store the facts they know quickly and continue to practice the facts they do not know. Students can take the cards for Group D home to practice with their families.

Ongoing Assessment

Use DPP item A to assess students' strategies and fluency with the addition facts in Group D with sums to ten [E12].

See the Letter Home for targeted practice ideas.

A. Addition Flash Cards: Group D

With a partner, sort the flash cards into three piles: Facts I Know Quickly, Facts I Can Figure Out, and Facts I Need to Learn. Clip cards in the Facts I Know Quickly pile together and place them back into the envelope. Update your Addition Facts I Know chart. Practice the facts in the last two piles again.