100 Links
Est. Class Sessions: 1
Students work in groups with chain links grouped by tens in alternating colors. They practice counting by tens. Students partition 100 into two parts using the links and write number sentences that describe their partitions.
Content in this Lesson
- Representing partitions of 100 with links [E2].
- Grouping and counting objects by tens.
- Partitioning 100 into multiples of ten [E1].
- Exploring the relationship between addition facts for ten and multiples of ten.
- Writing number sentences for addition situations [E3].
- Writing numbers to 100 [E4].
- Solving addition problems involving multiples of tens using links and the
100 Chart [E7]. - Translating among representations (links, 100 Charts, number sentences).
Materials for Students
| Daily Practice and Problems | Lesson | Homework | Assessment | ||
|---|---|---|---|---|---|
Student Books |
Student Activity Book |
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Teacher Resources |
Teacher Guide - digital |
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Supplies for Students
2 different-colored sets of 50 links. See Materials Preparation.
calculator, optional
Materials for the Teacher
Display of 100 Chart (Student Activity Book) Reference
Unit 11 Assessment Record
Math Facts Class Record
class number line (0–130)
Materials Preparation
Prepare Addition Flash Cards. After students have completed the lesson, place 100-link chains along with copies of the 100-Link Chain page in the Student Activity Book in a learning center. Challenge students to partition 100 by tens into both two and three parts.
Sort links. Sort links into groups of 50 of the same color. Each group of students will need two different-colored sets of 50 links so they can make 100-link chains with groups of 10 in alternating colors. See Figure 1.
Figure 1: Using groups of 10 links in alternating colors to make a 100-link chain
Assessment in this Lesson
| Assessment | Expectation Assessed |
|---|---|
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100-Link Chain Student Activity Book Page 319 |
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DPP Item C Doubles Teacher Guide - digital |
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