Display the class number line (0–130) where students can see and reach it with a pointer.
Attach a desk number line (0–40) to each student's desk to use throughout the year.
Display the Math Practices page where all students can see it.
Locate the book 12 Ways to Get to 11 by Eve Merriam for Lesson 3.
Continue to collect coins for the class bank activities in Unit 5.
Have the following tools readily available for the Daily Practice and Problems items in this unit.
- 20 connecting cubes
- number lines
- ten frames
- connecting links
- pennies
| LESSON | SESSIONS | DESCRIPTION | SUPPLIES |
|---|---|---|---|
LESSON 1Exploring Even and Odd Numbers |
1 | Students explore even and odd numbers by grouping objects in pairs. |
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LESSON 2The Pet Shop |
2 | A pet shop provides students the opportunity to discuss and solve addition problems. The part-whole concept and related language are discussed. Both parts are known and added to find the whole amount. Students are introduced to using calculators as problem-solving tools used to check whether their answers to addition problems are reasonable. |
|
LESSON 3Parts and Wholes |
2–3 | Students write addition number sentences for the numbers 11 and 12 and partition numbers into two or more addends. Students solve problems with missing addends. |
|
LESSON 4Counting On to Add |
1 | Students play the Counting-On Game and use the counting-on strategy to solve addition problems. Repeated opportunities to use this strategy are provided to help students make it a natural part of their thinking. Counting on from two-digit numbers is introduced. |
|
LESSON 5Counting On to Add with Number Lines |
1 | Students practice counting on from one-digit and two-digit numbers to solve addition problems within the context of using a calendar. Their work is supported by using a number line. |
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