Look at Flats
Estimated Class Sessions: 1–2
Students measure and count bits and skinnies to find out how many bits are in a flat and how many skinnies are in a flat. They represent numbers in the hundreds using flats, skinnies, and bits.
Content in this Lesson
- Understanding place value.
- Representing numbers in the hundreds using base-ten pieces and number sentences [E1].
- Partitioning numbers into hundreds, tens, and ones and modeling them with base-ten pieces [E2].
- Recognizing that different partitions of the same number have the same total [E5].
- Showing and recognizing different partitions of numbers using different representations [E3].
- Making connections between place value concepts and base-ten pieces, number sentences, and symbols [E4].
Materials for Students
| Daily Practice and Problems | Lesson | Homework | Assessment | ||
|---|---|---|---|---|---|
Student Books |
Student Activity Book |
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Teacher Resources |
Teacher Guide - digital |
Supplies for Student Pairs
set of base-ten pieces: 21 bits, 20 skinnies, 3–5 flats
Materials for the Teacher
Display of Show a Number with Base-Ten Pieces Master (Teacher Guide) 4 copies
Unit 6 Assessment Record
Display set of base-ten pieces: bits, skinnies, and flats
Materials Preparation
Spinners. Gather spinners or materials for spinners. If you do not have clear plastic spinners, students can use paper clips and pencils. Straighten out one end of the paper clip, and place a pencil through the curved end. Then put the point of the pencil on the center of the spinner, and spin the paper clip around the pencil, using the straightened end as the pointer. See Figure 1.
Figure 1: Using a pencil and paper clip as a spinner
Organize Sets of Base-Ten Pieces. Place sets of base-ten pieces in a container or bag for each pair of students to make distribution easier.
Assessment in this Lesson
| Assessment | Expectation Assessed |
|---|---|
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Show a Number |
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