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Understand Area (Grade 3)

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Lesson Plans and Worksheets for Grade 3
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Common Core For Grade 3

Videos, examples, solutions, and lessons to help Grade 3 students learn to recognize area as an attribute of plane figures and understand concepts of area measurement.

A. A square with side length 1 unit, called “a unit square,” is said to have “one square unit” of area, and can be used to measure area.

B. A plane figure which can be covered without gaps or overlaps by n unit squares is said to have an area of n square units.

Common Core: 3.MD.5

Suggested Learning Targets

  • I can define a unit square.
  • I can define area as the measure of space within a plane figure and explain why area is measured in square units.
3.MD.5.a - The Square Unit (Area)
This video explains the concept behind area, which focuses on the unit square. This illustrates 3.MD.5.a in the grade 3 Common Core Standards for Mathematics.

3.MD.5.b - Cover a Plane Figure with Square Units (Area)
This video explains how to find the area of a plane (flat) figure by covering it with square units. This is the basic process behind finding the area of a plane figure, which illustrates 3.MD.5.b in the grade 3 Common Core Standards for Mathematics. 3 MD 5
In this lesson, you will learn how to determine the area of a shape in square units. Measuring Area Using Square Units Introduction to area and unit squares

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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