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Worksheet
Curated OER

Shape Find

For Students 1st - 2nd
In this geometric shapes activity, students analyze a full page collage of geometric shapes. Students color the triangles green, the squares red, the rectangles blue and the squares brown. Students count each kind of shape.
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Lesson Plan
Curated OER

Why are Bubbles Spheres

For Teachers 8th - 10th
Learners calculate the surface area of different polygons. In this geometry lesson, students practice calculating the volume of spheres. They work with cones, cylinders and rectangular prisms.
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Lesson Plan
Curated OER

Sir Cumference and the Dragon Pi

For Teachers 6th - 8th Standards
Geometry adventurers study circumference of a circle as they listen to Sir Circumference and the Dragon Pi, by Cindy Neuschwander. In groups, they use string to measure the diameter and circumference of circular objects and then consider...
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Lesson Plan
Curated OER

Angles and Arcs

For Teachers 9th - 10th
Students discuss the sum of central angles and use string to create them on circles. They find the measure and length of both minor and major arcs. Students give examples of concentric, similar, and congruent circles and congruent arcs.
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Lesson Plan
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Inscribed Angles

For Teachers 9th - Higher Ed
Students analyze inscribed angles and intercepted arcs and explore the relationships between the two. They investigate the properties of angles, arcs, chords, tangents, and secants to solve problems involving circles.
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Lesson Plan
Curated OER

Investigating Pot Sherds

For Teachers 6th
Sixth graders measure pot sherds and use their knowledge of Pi to infer possible uses of pottery. They also infer possible functions of ancient ceramics. After tracing rounded pottery pieces onto paper, 6th graders use compasses to...
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Lesson Plan
Curated OER

Math: Arcs and Chords

For Teachers 9th - 10th
Students draw diagrams demonstrating how it is possible to two central angles to be congruent and their minor arcs are not congruent. In groups, they illustrate theorems with their constructed circles, create diameters of circles that...
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Worksheet
Curated OER

Geometry Worksheet: Area (6)

For Students 10th
In this geometry learning exercise, 10th graders express the area of the ring between two concentric circles in terms of the length of a segment tangent to the smaller circle.  The one page learning exercise contains a drawing of and an...
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Lesson Plan
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Geometric Figures

For Teachers 5th - 6th
Young scholars compare, classify and calculate the area of geometric figures such as rectangles, squares, circles and triangles.
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Lesson Plan
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Modeling Permutation Group

For Teachers 9th - 11th
Students explore the concept of transformations. In this transformations lesson, students construct an equilateral triangle and a square with a circumscribed circle. Students reflect and rotate their constructions.
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Lesson Plan
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Around and Across

For Teachers 10th
Tenth graders investigate the circumference and diameter of a circle. For this geometry lesson, 10th graders relate circumference to diameter. They create a scatter plot to estimate the value of pi.
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Lesson Plan
Curated OER

Listen to a Shape

For Teachers 1st
First graders identify basic shapes (circle, square, rectangle, triangle) and describes the attributes of each. They use magazines to find examples of each shape, and then make a collage.
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Lesson Plan
Curated OER

Geometry: Area

For Teachers 2nd - 6th
Students visit various websites to calculate the area of circles, triangles, rectangles, trapezoids, and parallelograms. They explore math problems and play interactive games dealing with geometry.
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Worksheet
Curated OER

Which Word Matches the Image? #2

For Students 2nd - 3rd
In this math worksheet, students learn to match the name of a geometric figure with the picture. Students examine a drawing of a geometric shape, then circle the word that matches it.
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Lesson Plan
Curated OER

Worksheet 1, Coordinate Graphing

For Teachers 10th - 11th
In this algebra worksheet, students determine the quadrant a given point is in. They find the midpoints of two line segments. Students plot points to form a triangle and find the distance between points. Students find the area of the...
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Worksheet
Curated OER

Creating Tessellations

For Students 10th
In this creating tessellations worksheet, 10th graders solve 2 word problems that include creating various tessellations. First, they explore the various techniques used to form tessellations, including triangles, quadrilaterals,...
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Worksheet
Curated OER

Symbol Search

For Students 3rd - 4th
In this visual thinking activity, students analyze 50 different symbols in a grid. Students must find 10 specific symbols in the puzzle and color or circle them.
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Worksheet
Curated OER

Same Worksheet

For Students Pre-K - K
This basic shapes worksheet has students look at the shapes in 3 rows, and circle the shape that is the same as the first shape in each row. Very basic shape recognition.
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Lesson Plan
Curated OER

Perimeter and Area of 2D Shapes

For Teachers 6th - 7th
Young scholars find the perimeter and area of circles, triangles, and rectangles. For this perimeter and area lesson, the teacher gives students formulas for each shape and measurement and works through examples on the board. While no...
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Worksheet
Curated OER

Geometric Shape Size Comparison Worksheet

For Students Pre-K - K
In this geometric shape size comparison worksheet, students name the shape in each of three rows. They circle the largest shape in each row. They see blue circles, green squares, and orange diamonds.
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Lesson Plan
Curated OER

Exploring Centers of Triangles

For Teachers 7th - 10th
Students explore properties of triangles using angle bisectors, incenters, circles, midpoints, and altitudes. They use Geometer's Sketchpad in order to create triangles and their properties.
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Worksheet
Curated OER

PreCalculus Worksheet 8.4

For Students 11th - 12th
In this precalculus worksheet, students write numbers in their trigonometric form and compute the numbers to a given power. Students explore the parametric function and trace the roots of unity. After completing eight short answer...
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Worksheet
Curated OER

January Worksheets: Number Book

For Students 1st - 2nd
In this lower elementary geometry worksheet, students make a shape book. They receive a book with the outline of a circle, triangle, square, and rectangle with the word that names the shape. They cut out images of the four shapes and...
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Worksheet
Curated OER

Trace These Shapes

For Students Pre-K - K
In this math worksheet, students trace three geometric shapes. Students trace a circle, square, triangle and heart. There are no other directions.

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