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Lesson Plan
Curated OER

Coordinate Geometry

For Teachers 4th - 7th Standards
Grab your class and get them graphing polygons on a coordinate plane! They investigate the four quadrants, discover the x and y axis, and correctly plot ordered pairs. To show their comprehension, each child creates a coordinate picture...
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Lesson Plan
Virginia Department of Education

Translation and Reflection

For Teachers 7th Standards
Bring about the change you want to see in the world  or at least in your lesson plans. Young mathematicians learn about translation and reflections by applying them to polygons on the coordinate plane. Results provide data to develop...
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Lesson Plan
Curated OER

Triangles and Things

For Teachers K - 2nd Standards
Young learners listen to the story book The Greedy Triangle as the teacher introduces new polygon shapes. They use geometric stencils to trace a quadrilateral, a pentagon, a hexagon, and an octogon onto a foldable notepad. They identify...
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Lesson Plan
Futures Channel

Folding Circles

For Teachers 7th - 12th Standards
Students investigate properties of circles. In this geometry lesson, students differentiate between similarity and congruence as they observe polygons. They investigate properties of two and three dimensional shape.
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Lesson Plan
Curated OER

Goldilocks and the Coordinate Grids

For Teachers 6th - 8th Standards
Where this lesson idea is lacking in materials, it makes up for with creativity! Using "Goldilocks and the Three Bears" as the background, mathematicians plot points on a coordinate grid to create props for the story. The polygons all...
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Lesson Plan
Houghton Mifflin Harcourt

Introducing the Concept: Triangles and Quadrilaterals

For Teachers 5th - 7th Standards
Guide your geometers through the process of constructing polygons. They learn how to draw triangles, squares, parallelograms, rectangles, rhombuses, and trapezoids with specified angles using a protractor and a ruler. The lesson plan...
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Lesson Plan
Curated OER

Math Prefixes

For Teachers 5th - 8th
Young scholars use a dictionary to gather appropriate information for writing simple definitions. They recognize prefixes that relate to numbers, such as mono-, bi-, and tri-. Pupils use their creative abilities to extrapolate new words...
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Lesson Plan
Houghton Mifflin Harcourt

Developing the Concept: Triangles and Quadrilaterals

For Teachers 5th - 7th Standards
Exact narrative and examples make this lesson on polygons easy to implement. Through it, your class will learn how to use a protractor and ruler to construct triangles and quadrilaterals according to your directions. Your class will be...
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Worksheet
Curated OER

Geometry Practice: Transformations, Isometries, and Tessellations

For Students 9th - 12th
Five pages for geometry practice relating to symmetry provide mathematicians with exercises on transformations and symmetry, properties of isometries, compositions of transformations, tessellations with regular polygons, and other...
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Worksheet
Curated OER

Angles, Symmetry, and Quadrilaterals in Four Exercise Sets

For Students 8th - 11th
For this angles worksheet, students calculate the size of angles, draw lines of symmetry, and form quadrilaterals in four exercise sets.  The solutions are provided.
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Lesson Plan
Curated OER

Creature Design

For Teachers 5th
Fifth graders create mathematical creatures. In this geometry lesson, 5th graders create a creature from regular and irregular geometric shapes. Students review vocabulary and construct an original creature based on a rubric.
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Lesson Plan
Curated OER

Shapes Are Everywhere

For Teachers 3rd
Third graders explore pattern blocks noticing their similarities and differences and share their observations with others. They classify shapes by discussing sides and angles and combine pieces to make new shapes.
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Lesson Plan
Curated OER

Discovering Perimeter

For Teachers 12th
Twelfth graders apply perimeter measurement to items found in newspapers and calculate the cost in terms of feet or yards. They share answers and explanations with classmates.
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Worksheet
Curated OER

More on Tessellations

For Students 10th
In this tessellations worksheet, 10th graders solve 3 different word problems that include creating various tessellations. First, they group pentagons around a vertex so the angles add up to 360 and determine whether the pentagons can...
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Worksheet
Curated OER

Polynominoes

For Students 10th
In this polynominoes activity, 10th graders solve 9 different problems relating to various types of polynominoes, such as triominoes and tetrominoes. First, they determine how many different types of triominoes they can locate and draw...
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Worksheet
Curated OER

Properties of Angles

For Students 10th
In this properties of angles worksheet, 10th graders solve and complete 3 different types of problems. First, they calculate the value of the missing angles in each diagram and explain the reasons for their answer. Then, students...
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Worksheet
Curated OER

Shoelace Algorithm

For Students Higher Ed
For this shoelace algorithm worksheet, students determine the area of a triangle when given the coordinates of the vertices. They determine the area of a quadrilateral. Students find the average of the x and y coordinates.
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Lesson Plan
Curated OER

Angles And Triangles

For Teachers 7th
Seventh graders participate in a lesson that is focused upon the concepts of classifying different angles and triangles. They practice classifying triangles according to its kind that includes types of angles, congruence, and vertices....
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Lesson Plan
Curated OER

Cut, Construct and Think

For Teachers 4th - 5th
Learners complete geometrical shapes construction activities. For this geometrical concepts lesson, students cut shapes from a worksheet to create a geometrical study activity. Learners analyze their shapes and complete a table. Students...
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Lesson Plan
Curated OER

Perimeter and Circumference

For Teachers 5th - 8th
Students consider perimeter and circumference. In this lesson on perimeter, students will determine relationships between perimeter and circumference using real life examples.
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Lesson Plan
Curated OER

Hands-On Geometry

For Teachers 10th
Tenth graders construct a variety of geometric shapes and designs using a Mira, Clinometer and Geometry Flash Cards. They complete a worksheet.
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Lesson Plan
Curated OER

Shape Up!

For Teachers 2nd - 4th
Students investigate measurement through the use of literature through this series of lessons.
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Lesson Plan
Curated OER

Geometry Slideshow

For Teachers 6th
Sixth graders create slideshows of geometric terms. They use images taken with digital cameras or scanned from magazines.
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Lesson Plan
Curated OER

Geometry and Shapes in the X-36

For Teachers 2nd - 3rd
Students describe, draw, and classify shapes. They use the internet to research the X-36 aircraft. Students identify the geometric shapes in the aircraft. They calculate the number of sides in an x-36.

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