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Perimeter & Area Formulas

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Perimeter & Area Formulas

TEKS Math: 4.5.C

(C) Use models to determine the formulas for the perimeter of a rectangle (l + w + l + w or 2l + 2w), including the special form for perimeter of a square (4s) and the area of a rectangle (l x w)

CCSS Math: 4.MD.3

4.MD.3 Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.

This measurement and data lesson requires students to solve problems by applying the area and perimeter formulas for rectangles. The lesson includes research-based strategies and strategic questions that prepare students for assessments. In this lesson, students are taught the formulas for area and perimeter and then are given word problems and diagrams and asked to find the perimeter and/or area. Students are also required to read a word problem and determine whether they need to solve for area or perimeter based on the given information.

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Standard Alignments:

TEKS Math: 4.5.C

(C) Use models to determine the formulas for the perimeter of a rectangle (l + w + l + w or 2l + 2w), including the special form for perimeter of a square (4s) and the area of a rectangle (l x w)

CCSS Math: 4.MD.3

4.MD.3 Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.


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Perimeter & Area Formulas

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