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Lesson Plan
Curated OER

Congruence with Robot Gobot

For Teachers 8th - 10th
Students identify the properties of solids and polygons. For this geometry lesson, students identify the different measurements of a triangle. They use congruence parts and theorem to prove their answer.
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Lesson Plan
Curated OER

Surface Area with Polydrons

For Teachers 3rd - 4th
Students explore measurements by analyzing geometric shapes. In this surface area lesson, students identify the terms volume, weight, perimeter and area in order to find the requested measurements of specific polygons. Students utilize...
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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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Worksheet
Curated OER

Area of Shapes

For Students 4th - 6th
For this geometry worksheet, students find the area of squares, rectangles, and non traditional shapes. Students complete 5 problems on this worksheet. 
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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

Study Buddies: Perimeter

For Teachers 4th - 5th
In this math worksheet, students will work with a coach to solve a story problem in which they must find the perimeter of two gardens. Students will follow a step-by-step process and notes are provided for the coach.
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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

Orbital path of Landsat

For Teachers 6th - 8th
Students comprehend how Landsat satellites orbit teh Earth to produce images. They comprehend the elliptical path of satellites. Students recognize that a different orbital path is needed for different satellites to perform their tasks....
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Lesson Plan
Curated OER

Looking at Circumference

For Teachers 6th - 8th
Students 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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Organizer
Curated OER

Analyze a Street Map

For Students 4th - 6th
For this street map worksheet, students analyze a section of a street map of Washington D.C, finding parallel streets, listing streets that form given shapes, and following directions. Answers on page 2.
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Lesson Plan
Curated OER

Squares to Compare

For Teachers 3rd - 4th
Students investigate how to draw and classify two and three dimensional figures (squares, triangles, rectangles.)
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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

Math: A Geometric Neighborhood

For Teachers 6th - 8th
Learners, as a final project, draw a picture of their ideal neighborhood on a sunny day. In addition to the sun, their drawings include homes, trees, streets, and selected objects. Each object in their drawing has a written description...
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Lesson Plan
Curated OER

Area

For Teachers 4th - 6th
Students use different shapes that represent tangrams to determine the area of a space. In this area lesson plan, students trace shapes and have their partners determine the area of that shape.
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Lesson Plan
Curated OER

Let's Tesselate

For Teachers 3rd - 4th
Students investigate the geometrical concepts of translation, reflection, and rotation. They make different observations looking for the concepts that are displayed in classroom items like floor tiles, carpet designs, and visuals hung in...
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Lesson Plan
Curated OER

Quadrilateral Characteristics

For Teachers 4th
Fourth graders explain the characteristics of quadrilaterals and describe, identify and analyze characteristics and properties of geometric shapes.
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Lesson Plan
Curated OER

Geometry /Tessellations

For Teachers 6th - 8th
Students 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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Unit Plan
CK-12 Foundation

Ck 12: Regular and Irregular Polygons

For Students 9th - 10th
[Free Registration/Login Required] Students explore the concept of regular and irregular polygons by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn...
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Regular and Irregular Polygons

For Students 6th - 7th
[Free Registration/Login may be required to access all resource tools.] Understand the difference between regular and irregular polygons.
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Unit Plan
Cuemath

Cuemath: Regular Polygon

For Students 9th - 10th Standards
Introduces the concept of regular polygons along with regular polygon examples, not regular polygons, irregular polygons, and area of a regular polygon. Check-out the solved examples for better understanding and try your hand at solving...
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Lesson Plan
Better Lesson

Better Lesson: Area of Irregular Polygon

For Teachers 3rd Standards
Third graders look for break apart irregular polygons to make arrays to find the area of these common shapes.
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Lesson Plan
Better Lesson

Better Lesson: Finding Arrays in an Irregular Polygon

For Teachers 3rd
Third graders decompose an irregular polygon into arrays to find the area.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Regular and Irregular Polygons

For Students 7th
[Free Registration/Login may be required to access all resource tools.] Identify regular polygons and their characteristics
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Activity
Texas Instruments

Texas Instruments: Numb3 Rs: Irregular Polygon Centroids

For Teachers 9th - 10th
Based off of the hit television show NUMB3RS, this lesson has students explore finding the centroid of an irregular polygon by finding the mean of the coordinates of the polygon's vertices. Further, students find the centroid given that...

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