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Lesson Plan
Curated OER

Karen's Tiles

For Teachers 7th - 9th
Students investigate how perimeter changes as area changes to see the relation between area and perimeter for similar shapes. They then students answer the question if the area of the rectangle increase, does its perimeter have to increase?
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Lesson Plan
Curated OER

Perimeters, Patterns, and Conjectures

For Teachers 7th - 8th
Students discover patterns and write conjectures relating to perimeters and polygons. Working in cooperative learning groups, they use manipulatives and graphic organizers to solve problems then answer a series of questions in which they...
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Lesson Plan
Curated OER

Cut, Construct and Think - 6

For Teachers 5th - 8th
Students identify polygons and calculate perimeter. In this geometric shapes lesson, students complete a worksheet identifying various polygons and calculating the perimeter of triangles and quadrilaterals.
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Lesson Plan
Curated OER

Around and Around We Go

For Teachers 4th
Fourth graders discover that a polygon is a closed figure formed by line segments, and that the perimeter of a polygon is the sum of the lengths of its sides. They utilize a worksheet imbedded in this plan to gain lots of practice with...
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Lesson Plan
Curated OER

Square Pegs in Round Holes

For Teachers 6th
Sixth graders problem solve the square peg in the round whole problem by applying knowledge of the formulas for the areas of the circle and the square. They decide on a problem solving strategy based on logical reasoning.
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Lesson Plan
Curated OER

Angles in Art Lesson

For Teachers 5th - 9th
Students examine the correlation between art and math. Using their computers, students construct and measure angles. Students identify the properties of angles and polygons. They engage in the Angles program on their Palm and use the...
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Worksheet
Curated OER

Topics in Math

For Students 10th - 11th
In this consumer mathematics activity, students explore a variety of topics in mathematics including simple interest, perimeter, area, volume, translating words into symbols, percentage problems and mortgage calculations. The fourteen...
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Interactive
Curated OER

Parallelograms

For Students 9th - 12th
In this online math worksheet, students practice finding the area of 10 parallelograms given the length and width. When complete, students submit their answers and get instant feedback regarding their accuracy.
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Lesson Plan
Curated OER

From a Square to a Rectangle

For Teachers 8th
Eighth graders solve problems involving percentage increases and decreases. Using given percentages, 8th graders transform a square into a rectangle. They apply the area formulas for squares and rectangles.Students observe the percent...
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Lesson Plan
Curated OER

Year Book Page Special Shape Collage

For Teachers 8th - 10th
Students design a collage of pictures for a yearbook that make a shape. They determine the area of the shape and the price of putting the collage in the yearbook.
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Lesson Plan
Curated OER

Moving On: Octagoning the Circle

For Teachers 3rd - 8th
Students explore circles through the use of octagons. They inscribe a circle in a regular octagon and find the area and perimeter of the hexagon with respect to the radius of the circle. Students present their findings to the class.
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Lesson Plan
Curated OER

Finite Geometry

For Teachers 9th - 10th
Students solve for the area and perimeter of polygons. In this geometry instructional activity, students identify repeated patterns and create formula to solve problems. They make conjectures and prove hypotheses.
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Lesson Plan
Curated OER

Geometric Basketball Court

For Teachers 8th - 10th
Pupils calculate the area and perimeter of a basketball court. In this geometry lesson, students differentiate between similarity and congruence of geometric objects. They test conjectures and use it to solve problems.
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Lesson Plan
Curated OER

Troublesome Towers

For Teachers 8th - 10th
Students observe solids and identify parts that make up the surface area. For this geometry lesson, students calculate the surface are of solids and cones. They find polygons and solids in the real world.
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Lesson Plan
Curated OER

Interior Angles of Regular Polygons

For Teachers 9th - 12th Standards
Students investigate the interior angles of a triangle. In this geometry instructional activity, students create the formula to calculate the angles inside a triangle. They observe the total sum of a triangles angle on the navigator.
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Lesson Plan
Curated OER

Area of Polygons

For Teachers 9th - 11th
In this geometry worksheet, students analyze the different properties of parallelograms related to their angles, sides and diagonals. There are 5 problems with an answer key.
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Lesson Plan
Curated OER

How is our place connected to other places?

For Teachers 2nd
Second graders conduct a survey, they record their data with the help of maps. They use an aerial photo or Ordnance Survey map, 2nd graders pinpoint specific places and add them to a legend using the drawing tools. Students use...
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Lesson Plan
Curated OER

Dilations of 2 and 3 dimentional figures and their effect on area, surface area, and volume.

For Teachers 7th
Seventh graders investigate the area and volume of 2D and 3D figures. In this geometry lesson, 7th graders create a storyboard explaining their knowledge of 2D and 3D shapes. They analyze their data and interpret their results.      
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Lesson Plan
Curated OER

Area and Perimeter

For Teachers 9th - 12th
Students participate in a hands-on activity that shows the independence of perimeter and area for simple irregular figures.
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Lesson Plan
Curated OER

Math: Equal Area Triangles

For Teachers 6th - 8th
Students examine a math worksheet and determine how to divide a single triangle into four of equal area. Using geometric principles, they sketch two additional ways to divide into into four equal triangles. To conclude, students...
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Lesson Plan
Curated OER

Unit Perimeters and Areas

For Teachers 9th - 11th
Students use Geometers SketchPad to find the area and perimeter of several shapes. In this geometry lesson, students determine area of rectangles and progress through irregular polygons. None of the referenced worksheets are included...
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Lesson Plan
Curated OER

Pape's Theorems

For Teachers 11th - Higher Ed
For this math worksheet, students find the length of the side of a regular hexagon whose area is numerically equal to its perimeter.
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Worksheet
National Council of Teachers of Mathematics

Perplexing Parallelograms

For Students 9th - 10th
In this geometry worksheet, young mathematicians divide a parallelogram into four, by choosing points along a diagonal.  Students calculate the area of each parallelogram and look for any patterns that may emerge.  The one-page worksheet...
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Worksheet
Curated OER

Tiling with Pentominoes

For Students 10th
For this tiling with pentominoes worksheet, 10th graders solve 3 different problems related to tiling with pentominoes. First, they define pentomino as a type of polygon and locate 10 other pentomino shapes in the figure shown at the...

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