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Website
Saddleback College

Algebra2go: Finding Perimeter Problem Sets

For Students 9th - 10th Standards
This resource has three problem sets to practice finding the perimeter of rectangular shapes. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem. When you have answered all of the...
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Interactive
Shodor Education Foundation

Shodor Interactivate: Perimeter Explorer

For Students 3rd - 5th Standards
Use this applet to find the perimeter of a variety of shapes with the same or different areas.
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Activity
Texas Instruments

Texas Instruments: Greatest Area Activity

For Teachers 6th - 8th
A classic problem looking at maximizing the area of rectangles given fixed perimeters. Uses graphing calculators to analyze data collected and to model a parabolic equation. Compiling class data provides a preliminary glance at families...
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Whiteboard
ClassFlow

Class Flow: Perimeter & Area of Rectangles & Parallelograms

For Teachers 6th - 8th Standards
[Free Registration/Login Required] In this flipchart, students will investigate the area and perimeter of rectangles and parallelograms. This is an interactive lesson and also includes an assessment.
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Whiteboard
ClassFlow

Class Flow: Area Rectangle

For Teachers 3rd - 8th Standards
[Free Registration/Login Required] This flipchart will help students to solve the area for various rectangles on graph paper. It asks the students to define and solve for area using the appropriate formula.
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Whiteboard
ClassFlow

Class Flow: Area Rectangles

For Teachers 3rd - 8th Standards
[Free Registration/Login Required] In this lesson students will understand area measured in square centimeters. They will understand and use the formula in words for the area of a rectangle.
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Unit Plan
Khan Academy

Khan Academy: Represent Rectangle Measurements

For Students 3rd - 5th Standards
Label the given measurements in a diagram. Find the side length of a square when given the area. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Find a Missing Side Length When Given Area

For Students 2nd - 4th Standards
Practice finding a missing side length on a rectangle when given the other side length and the area. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Lesson Plan
Other

Nearpod: Geometry: Fall Edition

For Teachers 3rd
In this lesson, 3rd graders will use multiplication to find the area of a rectangle.
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Unit Plan
AAA Math

Aaa Math: Perimeter of a Square

For Students 4th - 6th Standards
Students are taught how to calculate the perimeter of a square. Extra practice drill problems are also included.
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Scale Factor

For Students 3rd - 8th Standards
The interactive applet allows learners to explore the relationships between side length, area, and perimeter. Students see how changes in the scale factor influence the ratio of areas and perimeters. [Requires Java.]
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Activity
Homeschool Math

Homeschool Math: Area of Rectangles

For Teachers 4th - 6th Standards
This lesson contains a video lesson [9:28] and various exercises about the area of rectangles, common units of area, two-part rectangles and the distributive property, and shapes composed of rectangular areas.
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Area of Rectangles

For Students 3rd - 5th Standards
This applet allows for the exploration of the area of rectangles.
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Handout
Quia

Ixl Learning: Area of Rectangles

For Students 3rd - 5th Standards
Brush up on your math skills relating to the area of rectangles then try some practice problems to test your understanding.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Unknown Dimensions Using Formulas Grade 7

For Students 7th
[Free Registration/Login may be required to access all resource tools.] Given a perimeter or area of a figure, use formulas to solve for the unknown or missing dimensions.
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Interactive
Shodor Education Foundation

Shodor Interactivate: Shape Builder

For Students 9th - 10th Standards
This activity operates in one of two modes: auto draw and create shape mode, allowing you to explore relationships between area and perimeter.
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Unknown Type
Khan Academy

Khan Academy: Find Area With Partial Unit Squares

For Students 6th - 8th
Count unit squares and partial unit squares to find the area of shapes.
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Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Patios

For Students 3rd - 8th Standards
Does bigger perimeter mean bigger area? Answer this question when you try this math challenge from the NCTM Math Challenges for Families series. Discover how understanding area and perimeter can be useful in real world situations.
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Interactive
Calculator Soup

Calculator Soup: Rectangle Calculator

For Students 9th - 10th
Use this calculator if you know 2 values for the rectangle, including 1 side length, along with area, perimeter, or diagonals and you can calculate the other 3 rectangle variables. A square calculator is a special case of the rectangle...
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Unit Plan
AAA Math

Aaa Math: Perimeter of a Rectangle

For Students 4th - 6th Standards
Students are taught how to calculate the perimeter of a parallelogram. Extra practice drill problems are also included.
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Handout
Math Open Reference

Math Open Reference: Perimeter of a Rectangle

For Students 9th - 10th
Learn about the perimeter of a rectangle with this handy reference guide. Provides a detailed definition, examples, and interactive activities that enhance further explanation. Includes links to related topics.
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Handout
Homeschool Math

Homeschool Math: Area of Right Triangles

For Students 6th - 8th
This lesson presents the idea that the area of any right triangle is exactly half of a certain rectangle, and contains varied exercises for students.
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Lesson Plan
Homeschool Math

Homeschool Math: Area of Parallelograms

For Teachers 6th - 7th Standards
This lesson presents the idea that the area of any right triangle is exactly half of a certain rectangle, and contains varied exercises for students.
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Whiteboard
ClassFlow

Class Flow: Area Perimeter

For Teachers 3rd - 8th Standards
[Free Registration/Login Required] This flipchart demonstrates how to calculate perimeters and areas of simple compound shapes that can be split into rectangles.

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