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Worksheet
Curated OER

Rectangles

For Students K
In this rectangle worksheet, students focus on mastery of the shape. Students trace 3 horizontal and 3 vertical rectangles.
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Worksheet
Curated OER

Tracing and Coloring Rectangles

For Students K - 1st
In this geometry worksheet, students examine 14 rectangles of different sizes which are shown with dotted lines. Students trace the rectangles and "colour" in the shapes.
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Worksheet
Curated OER

Which One Does Not Belong?

For Students K
In this mathematics worksheet, students circle the shape in each group that is different. there are six different groups to identify on the sheet.
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Lesson Plan
Curated OER

Minimize Perimeter

For Teachers 6th - 8th
Students practice calculating the perimeter of different sized rectangles. Individually, they identify the derivations of a function that can show the perimeter and determine how to minimize the perimeter within a fixed area. They use...
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Lesson Plan
Curated OER

Minimize Perimeter -- Lecture

For Teachers 6th - 8th
Middle schoolers are introduced to the concept of perimeter. As a class, they listen to a lecture describing the derivations of a function that describes perimeter. They calculate the minimum perimeter of a rectangle and determine the...
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Lesson Plan
Curated OER

Exploring the Golden Rectangle

For Teachers 9th - 12th
Students will construct a golden section and a golden rectangle and study their characteristics and connections with the Fibonacci series. They import pictures from the internet and download them into the Sketchpad. Using their "golden"...
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Lesson Plan
Curated OER

How Much Grass Should I Buy?

For Teachers 7th - 12th
Students examine a variety of real life situations in which they must access information, select an appropriate formula, and calculate an answer. A rectangular piece of grass provides an opportunity for the exploration of this lesson.
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Activity
Wolfram Research

Wolfram Math World: Golden Rectangle

For Students 9th - 10th
This site contains the definition for the term "Golden Rectangle," complete with detailed pictures, charts, and explanations.
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Determining Unknown Angles Within Rectangles and Squares

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on how to determine missing angles within rectangles and squares.
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identifying Rectangles Squares Circles and Triangles

For Students 3rd - 5th
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview and attempt practice problems on identifying rectangles, squares, circles and triangles.
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identifying the Properties of Rectangles

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video tutorial and attempt practice problems on identifying the properties of rectangles.
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Unit Plan
Other

George W. Hart: Polygons

For Students 9th - 10th Standards
This personal site presents some general information about polygons.