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Area and Perimeter Unit - 3rd Grade

Grade Levels
3rd, Homeschool
Formats Included
  • Zip
45 pages
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8 Lesson Plans with review and assessment are directly aligned to ALL Common Core Standards for Geometric Measurement in 3rd Grade.

4 lesson plans on area cover the following content:
-learning concepts of area measurement
-measuring areas with improvised units
-measuring areas by counting unit squares (cm,in,ft,m)
-finding area by tiling
-finding area by multiplying side lengths A = l x w
-using distributive property to find area
-finding area by adding area of non-overlapping rectangles

Students will explore the content in the following ways:
-group work of measuring in improvised units and tiling large square foot and square meter rectangles
-completing the Area Tiling Worksheet using tiling squares
-finding A = l x w of various objects around the room
-completing the Area Word Problem Worksheet
-using distributive property to find area of rectangles taped to floor
-creating rectangles by tiling and solving other group members' rectangles
-completing the Distributive Property to Find Area Worksheet
-find area of non-overlapping rectangles using Cheeze-Its
-creating 2 non-overlapping rectangles using grid paper and solving for area of group members' rectangles
-creating Initial Area Art and solving area of the artwork

3 lesson plans on perimeter cover the following content:
-measuring area by counting unit squares
-measuring area by multiplying side lengths to solve real-world problems
- solving real-world and mathematical problems involving perimeters of polygons
-finding perimeters with given side lengths
-finding an unknown side length with given perimeters
-exhibiting rectangles with same perimeter and different areas
-exhibiting rectangles with same area and different perimeters

Students will explore the content in the following ways:
-listening to a picture book with a corresponding problem solving activity
-completing grid robots and finding area/perimeter
-using Cheez-Its to explore same/different areas and perimeters
-using objects around the room to find perimeter
-completing the Perimeters Around Me worksheet
-using Geoboards with rubber bands to create polygons and find perimeters
-participating in the Perimeter of Polygon group activity to find missing lengths
-completing the Perimeters of Polygons Worksheet to solve for missing lengths

The Area and Perimeter Review and Assessment includes a lesson plan with review games and a 20 question Area and Perimeter Assessment that is directly aligned to all Common Core Standards for 3rd Grade Geometric Measurement. The review includes Area and Perimeter Cards to play Area War and Perimeter War with partners. There is also a link to a website that includes 9 area and perimeter review games.

Other 3rd Grade units for purchase:
Link-3rd Grade Geometry Unit/Shape Unit

You may also be interested in these great resources:
Link-Geometry Review & Assessment – 3rd Grade
Link-Basic Operations and Word Problem Test & Review
Link-Basic Multiplication Minute Math Program
Link-Place Value Project - Primary
Link-Graphing Real World Data Worksheets

~Created by Kara Kruchinski

Total Pages
45 pages
Answer Key
Teaching Duration
2 Weeks
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to see state-specific standards (only available in the US).
Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non-overlapping parts, applying this technique to solve real world problems.
Use tiling to show in a concrete case that the area of a rectangle with whole-number side lengths 𝘢 and 𝘣 + 𝘤 is the sum of 𝘢 × 𝘣 and 𝘢 × 𝘤. Use area models to represent the distributive property in mathematical reasoning.
Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.
Multiply side lengths to find areas of rectangles with whole-number side lengths in the context of solving real world and mathematical problems, and represent whole-number products as rectangular areas in mathematical reasoning.
Find the area of a rectangle with whole-number side lengths by tiling it, and show that the area is the same as would be found by multiplying the side lengths.


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