In this interactive activity, students will be led through steps to measure and calculate the perimeter of polygons. There are teaching activities as well as practice activities available. A handout that reviews the steps taught during the interactive is available to be printed. After utilizing this resource, the students can complete the short quiz to assess their understanding.

Content Standard(s):

Mathematics MA2019 (2019) Grade: 3

24. Construct rectangles with the same perimeter and different areas or the same area and different perimeters.

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Evidence Of Student Attainment:

Students:

Identify rectangles with the same perimeter and different areas or the same area and different perimeters.

Construct rectangles with the same perimeter and different areas or the same area and different perimeters.

Teacher Vocabulary:

Perimeter

Area

Side length

Side measure

Knowledge:

Students know:

Perimeter is a measurable attribute of rectangles.

Area is a measurable attribute of rectangles.

Skills:

Students are able to:

Construct rectangles with a given perimeter.

Construct rectangles with a given area.

Construct rectangles with the same perimeters but differing areas.

Construct rectangles with the same areas but differing perimeters.

Understanding:

Students understand that:

Perimeter and area are measurable attributes of rectangles.

Perimeter is the distance around a figure found by adding side lengths.

The area of a plane figure is measured by the number of square units that cover the interior space of the rectangle.

Diverse Learning Needs:

Essential Skills:

Learning Objectives: M.3.24.1: Define perimeter.
M.3.24.2: Recall the formula for perimeter (P= L+L+W+W or P=2L + 2W).
M.3.24.3: Recall basic addition and multiplication facts.
M.3.24.4: Build and draw shapes to possess defining attributes.
M.3.24.5: Express the length of an object as a whole number of length units by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps.
M.3.24.6: Describe measurable attributes of objects such as length or weight.

Prior Knowledge Skills:

Recall doubles addition facts.

Model written method for composing equations.

Alabama Alternate Achievement Standards

AAS Standard: M.AAS.3.20 Find the area of a given shape using arrays (unit cubes and tiles) in relationship to multiplication. Limit units to 25.

Mathematics MA2019 (2019) Grade: 3

25. Solve real-world problems involving perimeters of polygons, including finding the perimeter given the side lengths and finding an unknown side length of rectangles.

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Evidence Of Student Attainment:

Students:

Measure to find the perimeter of shapes.

Given a figure, determine the perimeter of the figure.

Given a figure with a missing side length and a given perimeter, determine the missing side length.

Solve real-world problems involving perimeters of polygons.

Use a multiplication expression to find perimeter of a polygon when all side measures of the polygon are equal.

Teacher Vocabulary:

Attribute

Dimension

Perimeter

Polygon

Two-dimensional

Knowledge:

Students know:

Measurable attributes of objects, specifically perimeter.

Strategies for modeling measurement problems involving perimeter.

Strategies for representing and computing perimeter.

Skills:

The Students are able to:

Solve real-world and mathematical problems involving perimeters of polygons.

Find the perimeter of a figure given the side lengths.

Find an unknown side length of a polygon given the perimeter and one missing side length.

Understanding:

Students understand that:

Perimeter is measured in length units and is the distance around a two-dimensional figure.

If all the sides of a polygon are equal, then the perimeter can be determined by multiplying one side length by the total number of sides.

Diverse Learning Needs:

Essential Skills:

Learning Objectives: M.3.25.1: Define perimeter.
M.3.25.2: Recall the formula for perimeter (P= L+L+W+W or P=2L + 2W).
M.3.25.3: Recall basic addition and multiplication facts. M. 3.23.4: Build and draw shapes to possess defining attributes.
M.3.25.4: Express the length of an object as a whole number of length units by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps.
M.3.25.5: Describe measurable attributes of objects such as length or weight.

Prior Knowledge Skills:

Recall doubles addition facts.

Model written method for composing equations.

Alabama Alternate Achievement Standards

AAS Standard: M.AAS.3.20 Find the area of a given shape using arrays (unit cubes and tiles) in relationship to multiplication. Limit units to 25.

Mathematics MA2019 (2019) Grade: 4

23. Apply area and perimeter formulas for rectangles in real-world and mathematical situations.

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Evidence Of Student Attainment:

Students: When given real-world situations involving area and perimeter will,

Apply area formula to find the area of rectangles.

Find one missing dimension of the rectangle if one dimension is known.

Apply perimeter formula to find perimeter of rectangles.

Find one missing dimension of the rectangle if one dimension is known.

Teacher Vocabulary:

Area

Perimeter

Formula

Equation

Dimension

Length

Width

Knowledge:

Students know:

The relationship of area to the operations of multiplication and addition.

The relationship of three whole numbers in a multiplication or division equation.

How to distinguish between linear and area measures.

Skills:

Students are able to:

Apply area formula for rectangles given real-world situations.

Apply perimeter formula for rectangles given real-world situations.

Understanding:

Students understand that: Given real-world situations involving rectangles,

Area formula represents the region inside a rectangle and is used to calculate area, or calculate one missing dimension if one side length is known.

Perimeter formula represents the distance around the rectangle and is used to calculate the perimeter, or calculate one missing dimension if one side length is known.

Diverse Learning Needs:

Essential Skills:

Learning Objectives: M.4.23.1: Recall the formula for area (L × W).
M.4.23.2: Recognize that unit squares are equal.
M.4.23.3: Recall the formula for perimeter (P= L+L+W+W or P=2L + 2W).
M.4.23.4: Recall basic addition and multiplication facts.

Prior Knowledge Skills:

Define perimeter.

Recall the formula for perimeter (P= L+L+W+W or P=2L + 2W).

Recall basic addition and multiplication facts.

Build and draw shapes to possess defining attributes.

Express the length of an object as a whole number of length units by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps.

Describe measurable attributes of objects such as length or weight.

Define rows, columns, and total.

Identify rectangle.

Count to 20 by ones.

Trace partitions in a rectangle.

Alabama Alternate Achievement Standards

AAS Standard: M.AAS.4.23 Determine the area of a square or rectangle by counting units of measurement (e.g., unit squares).