2nd Module 1--Sums and Differences to 20
Click to download Terminology for Module 1

Module 1 Topics
Topic A reactivates students' Kindergarten and Grade 1 learning. Student remember their "make ten" facts. They use ten-frame cards and number bonds of ten to move from concrete to pictorial to abstract representations.They will use mental strategies to add and subtract within 20.

mental strategies

number bonds

         say ten counting
Topic B- Students use decomposing strategies to add and subtract within 20. They will use the ten- structure to reason about making a ten to add and subtract. Students will use math drawings to solve problems and understand the relationship between problems.

Topic C calls on students to review strategies to add and subtract within 100.

Decompose and add to make the ten

RDWW  is a four step problem-solving process. The steps are as follows:
1. Read
2. Draw a picture
3. Write a number sentence
4. Write a word sentence to answer the question