Curriculum / Math / 3rd Grade / Unit 7: Measurement / Lesson 3
Math
Unit 7
3rd Grade
Lesson 3 of 12
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Relate clocks to number lines.
The core standards covered in this lesson
3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
The foundational standards covered in this lesson
2.MD.B.6 — Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, …, and represent whole-number sums and differences within 100 on a number line diagram.
The essential concepts students need to demonstrate or understand to achieve the lesson objective
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Tasks designed to teach criteria for success of the lesson, and guidance to help draw out student understanding
Farida’s recess starts at the time displayed on the clock below. It ends at 1:45 p.m.
Plot points on the number line below that represent what time Farida’s recess starts and ends. Then explain how you decided where to plot them.
Plot the following times on the number line below.
Plot the following times on the same number line.
Problem Set
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A task that represents the peak thinking of the lesson - mastery will indicate whether or not objective was achieved
Plot points on the following number line that correspond with each time below. Label each point with its corresponding letter a–d. Be as precise as possible.
a. 5:45 p.m.
b.
c. 6:12 p.m.
d.
An example response to the Target Task at the level of detail expected of the students.
The Extra Practice Problems can be used as additional practice for homework, during an intervention block, etc. Daily Word Problems and Fluency Activities are aligned to the content of the unit but not necessarily to the lesson objective, therefore feel free to use them anytime during your school day.
Extra Practice Problems
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Lesson 2
Lesson 4
Topic A: Time Measurement
Tell time to the nearest minute.
3.MD.A.1
Tell time to the minute before the hour.
Solve word problems involving elapsed time within the same hour.
Solve word problems involving elapsed time that involves crossing the hour mark.
Solve word problems involving all cases of elapsed time in minutes.
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Topic B: Mass and Liquid Volume Measurement
Understand mass as an attribute of objects that is measured in grams and kilograms. Develop benchmarks for 1 kilogram and 1 gram.
3.MD.A.2
Estimate and measure mass in grams and kilograms by reading a measurement scale on an analog scale or other scale.
Solve word problems involving masses given in the same unit.
Understand liquid volume as an attribute of objects that is measured in liters and milliliters. Develop benchmarks for 1 liter and 1 milliliter.
Estimate and measure liquid volume in liters and milliliters by reading the measurement scale on a beaker or other container.
Solve word problems involving volumes given in the same unit.
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