Essential Questions: What is perimeter? How does knowing the attributes of plane figures help find the perimeter of an identified plane figure? What methods are used to measure perimeter/area? How does knowing the attributes of plane figures help find the area of a figure? How is area related to multiplication and addition? What is the difference between area and perimeter? How can the area of rectilinear figures be calculated? Lesson Plans and Seeds Lesson Plan C.7a: Using Tiling to Find Area Lesson Seed C.5: Covering the Shapes Lesson Seed C.7c: Using the Distributive Property to Find the Area Lesson Seed C.7d: Area Rectilinear Download Seeds, Plans, and Resources (zip) Unit Overview Content Emphasis By Clusters in Grade 3 Progressions from Common Core State Standards in Mathematics Send Feedback to MSDE’s Mathematics Team
Lesson Plan C.7a: Using Tiling to Find Area
Lesson Seed C.5: Covering the Shapes
Lesson Seed C.7c: Using the Distributive Property to Find the Area
Lesson Seed C.7d: Area Rectilinear
Unit Overview
Content Emphasis By Clusters in Grade 3
Progressions from Common Core State Standards in Mathematics
Send Feedback to MSDE’s Mathematics Team
Lesson seeds are ideas that can be used to build a lesson aligned to the CCSS. Lesson seeds are not meant to be all-inclusive, nor are they substitutes for instruction. When developing lessons from these seeds, teachers must consider the needs of all learners. It is also important to build checkpoints into the lessons where appropriate formative assessment will inform a teachers instructional pacing and delivery.
Standard(s): 3.MD.C.7c. 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 x b and a x c. Use area models to represent the distributive property in mathematical reasoning.
Purpose/Big Idea:
Materials:
Activity 1:
The Smiths are remodeling their family room. The whole space is a rectangle with dimensions 9 ft. x 12 ft. They want one rectangular section of the room to be carpeted and another rectangular section of the room to be tiled. As their designer, create a model using two different colored tiles to represent the carpet and the tile floors.
Guiding Questions:
