Math in Focus Chapter 15: Customary Length
Trimester 3
Big Idea: Length can be measured using customary units
*Note: this unit has been modified to eliminate focus on weight and capacity, as well as length in terms of feet and yards
Vocabulary: inch (in.), half inch, quarter inch, three quarter inch, mile (mi)
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Key Visuals/Activities:
Lesson Preview:
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Learning Links:
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Learning Videos:
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Game Suggestions:
IXL Measurement
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Workbook Videos (by Daniel Lu):
Daniel Lu's Site for Workbook |
Common Core State Standards:
Measurement & Data - Represent and Interpret Data:
Standards for Mathematical Practice:
Numbers & Operations - Fractions:
Develop understanding of fractions as numbers
- CCSS.MATH.CONTENT.3.MD.B.4 Generate measurement data by measuring lengths using rulers marked with halves and fourths of an inch. Show the data by making a line plot, where the horizontal scale is marked off in appropriate units— whole numbers, halves, or quarters.
Standards for Mathematical Practice:
- CC.K-12.MP.1 Solve problems and persevere in solving them.
- CC.K-12.MP.4 Model with mathematics.
- CC.K-12.MP.5 Use appropriate tools strategically.
- CC.K-12.MP.6 Attend to precision.
Numbers & Operations - Fractions:
Develop understanding of fractions as numbers
- CCSS.MATH.CONTENT.3.NF.A.1 Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
- CCSS.MATH.CONTENT.3.NF.A.2.B Represent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.