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Worksheet
Curated OER

Countdown Challenge: Live Symmetry in Regular & Irregular Polygons

For Students 7th - 8th
In this symmetry worksheet, students identify lines of symmetry in given polygons. They discover the correlation between the number of sides and the number of lines of symmetry. Students determine the lines of symmetry in irregular...
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Worksheet
Curated OER

Regular & Irregular Polygons

For Students 7th
In this polygons worksheet, 7th graders identify and complete 8 different problems that include determining the types of various polygons. First, they use the table to the left to color each of the polygons illustrated. Then, students...
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Worksheet
Curated OER

Regular or Irregular Polygons

For Students 6th - 8th
In this geometry skills learning exercise, students respond to 6 questions that require determine whether 6 geometric shapes are regular or irregular polygons.
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Lesson Plan
Curated OER

Area of irregular Polygons: Historical Motivator - Lewis and Clark Adventure

For Teachers 7th
Seventh graders find the area of irregular polygons. In this lesson on calculating area, 7th graders use the adventures of Lewis and Clark as motivation to learn how to calculate the area of irregular polygons.
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Worksheet
Curated OER

Pick's Theorem

For Students 6th - 7th
In this Pick's Theorem worksheet, students solve and graph 6 different problems that include using Pick's Theorem to solve. First, they use Pick's Theorem to determine the area of the shapes given as well as their own shapes drawn. Then,...
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Lesson Plan
Curated OER

Polygon People

For Teachers 6th - 8th
Middle schoolers identify polygons.  In this polygon people lesson, students draw required shapes and construct a polygon person.  They identify each shape and its characteristics.  The lesson may be extended by allowing middle schoolers...
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Lesson Plan
Curated OER

Chinese Tangrams

For Teachers 7th - 8th
Students research the history of Chinese tangrams and complete tangram activities. In this tangram lesson, students complete Internet research to learn the history of Chinese tangrams. Students construct a set of tangrams, compare the...
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Worksheet
Curated OER

Area of Polygons

For Students 6th - 8th
In this math worksheet, students find the area and perimeter of the regular and irregular polygons. They pay attention to use the proper measurements for calculation.
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Worksheet
Curated OER

Quadrilaterals and Other Polygons

For Students 6th - 7th
In this quadrilaterals and other polygons worksheet, students name various polygons and then decide if each polygon is a quadrilateral. Students also decide is certain polygons regular or irregular.
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Worksheet
Math eBook

Perimeter Worksheet

For Students 7th - 8th
In this perimeter worksheet, students find the perimeter of given regular and irregular polygons. This four-page worksheet contains 20 problems. This interactive worksheet may be completed online or printed for paper use.
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Lesson Plan
Curated OER

How Many Trees Can You Grow?

For Teachers 6th - 12th
Students solve a story problem about how many trees can be planted in a given area. Using a map, they gather information about the size of the area and the dimensions of an acre. They use a specific equation to determine the area of...
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Lesson Plan
Curated OER

Areas of States - Estimation

For Teachers K - 8th
Learners estimate the area of states using the formulas for the areas of rectangles, squares, and triangles. In this geometric shapes lesson, students divide irregular shaped states into shapes. They use the formulas for areas of...
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Lesson Plan
Curated OER

Sphere Dressing

For Students 7th - 10th Standards
Geometric design makes a fashion statement! Challenge learners to design a hat to fit a Styrofoam model. Specifications are clear and pupils use concepts related to three-dimensional objects including volume of irregular shapes and...
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Lesson Plan
Curated OER

Introducing Tessellations

For Teachers 6th - 12th
Students create tessellations to increase their knowledge of the applications of geometry. They explore the different shapes of polygons.
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Lesson Plan
Curated OER

Surface Area and Volume

For Teachers 5th - 8th
Upper graders identify the surface area and attributes of figures that are measurable. They estimate, measure, and record perimeter, area, temperature change, and elapsed time, using a variety of strategies. They also determine the...
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Lesson Plan
Curated OER

Exploring Number and Operation in Secondary Mathematics

For Teachers 5th - 8th
Young geometers need a clear understanding of perimeter, volume, and area. This lesson provides a worksheet to help small groups of learners to calculate various measurements of objects and choose the proper units for measurement. It...
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Lesson Plan
Curated OER

Looking at Circumference

For Teachers 6th - 8th
Middle schoolers understand where the number for pi comes from. They understand and use the formula for circumference. Students measure the circles given out and the diameters of those circles and record the results on their worksheet.
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Lesson Plan
Curated OER

Geometry and Tony Smith Sculpture

For Teachers 6th - 8th
Students respond to Tony Smith's sculpture as art and brainstorm about math concepts inherent in his work. They create a sculpture with polyhedra nets, calculate the cost of covering sculpture in gold, and write an exhibit label for...
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Lesson Plan
Curated OER

Geometry /Tessellations

For Teachers 6th - 8th
Learners investigate the concept of tessellations and how they are formed using angles. They categorize how different patterns do and not tessellate and separate them into two different places for assessment. The teacher draws examples...

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