Curated OER
Shapes from Shapes
Geometric shapes are really cool. Examine triangles, quadrilaterals, trapezoids, rhombuses, parallelograms, pentagons, and hexagons with your class. They draw large shapes and small shapes then compare them to understand their shapely...
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Measure: Bearings and Scale Drawings
Pupils practice drawing geometric figures. In this geometry lesson plan, learners complete an activity that requires them to draw angles and shapes to the nearest degree.
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More Trees in a Row
In this more trees in a row instructional activity, 6th graders review one similar puzzle then solve a new one about planting 10 tress in 4 rows of 5.
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Quilt Geometry
Seventh graders explore lines of symmetry, congruent polygons and patterns. They listen to "The Seasons Sewn," observe a PowerPoint presentation, and identify congruent polygons and visual patterns. Through an internet activity, 7th...
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Rep Tiles
Third graders use pattern blocks of one shape at a time to try to create a similar shape. They compare the perimeter of the new figure with the perimeter of the original shape and look for a pattern. Students use the pattern to predict...
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Scale Drawing
Students use ratio and proportions to solve problems. In this geometry lesson, students apply ratio and proportions to real life scenarios.
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Scale
Learners apply concepts of scales to solve problems. For this geometry lesson, students solve real world problems using scales, proportions and ratios. They predict the actual size of a model given the scale drawings.
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Why can't We Use SSA to Prove Triangles Congruent?
Students investigate triangles and congruences. For this geometry lesson, students differentiate between inductive and deductive reasoning. They differentiate between similar and congruent triangles.
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Side Splitter Triangles
Students investigate the side splitter theorem. In this geometry lesson, students estimate and solve problems dealing with ratios and proportions. They identify angles created by lines that are parallel.
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Dream Bedroom Floor Plan
Students build and apply concepts of geometry. In this geometry lesson, students create a building using proportions and scale drawings. They use Cabri technology to create a virtual drawing first.
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Geometry: Calculating Volumes
In this volume worksheet, middle schoolers find the volume of 8 prisms. Students are given the length, width, and height of each prism.
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Dream Bedroom Floor Plan
Students construct using Cabri software. For this geometry lesson, students convert between units and apply the correct measurements to build objects. They create the room virtually and manipulate the shapes to the desired measurements.
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Can You Name That Shape?
Learners use materials to build, investigate, and draw two-dimensional shapes (polygons). They combine the shapes they have built and draw from the pile to begin a round-robin activity to name and determine the attributes of a selection...
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Shapes Are Everywhere
Third graders use various shapes to identify polygons and understand symmetry. They explore pattern blocks noticing their similarities and differences, then share with other team members. They draw 3 polygons in their journals and...
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Tantalizing Tangrams: What Are Transformations?
Students use the Internet to learn about transformations and tessellations. In this geometry instructional activity, students use the Internet to define the meaning of reflections, translations, rotations, glide reflection and...
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Chalkboard Challenge: Fifth Grade Math Review
This PowerPoint addresses fifth grade math concepts, focusing mostly on geometry. The interactive math review game is in a "Jeopardy" style format and enables students to revisit the topics in geometry such as polygons, quadrilaterals...
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Coordinates
In this geometry worksheet, 10th graders are given points on a coordinate plane, and they must figure out what the x and y values are. There are 6 graphing question.
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Triangle Inequality Theorem
Young scholars use the inequality theorem to solve triangles and their properties. In this geometry instructional activity, students are given spaghetti of different lengths and asked to create triangles. They conclude the necessary...
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Angles in Polygons
In this geometry worksheet, 10th graders solve problems involving quadrilaterals using the angle sum of quadrilaterals. They solve for linear pairs, opposite angle theorem and triangular angles. There are 5 questions.
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Circles and Angles
Students identify tangents, chords and secants. In this geometry lesson, students graph circles and identify angles created by secant lines, tangent lines and chords.
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Why do Stars Rise in the East?
In this stars rise in the east learning exercise, students use geometry to show how the Earth rotates from west to east and why celestial bodies appear to rise in the east and set in the west. Students draw a figure and label given...
Helping with Math
Angles: Supplementary, Corresponding & Alternate (2 of 2)
In the second of two similar worksheets, anglers compute missing angles when given an alternate, supplementary, or complementary value. There are six problems to solve, but each of them requires two to four solutions. This is a nice...
Helping with Math
Angles: Supplementary, Corresponding & Alternate (1 of 2)
In the first of two similar worksheets, geometers compute two to four unknown angles when given an alternate, supplementary, or complementary value. There are six multliple-step problems to solve. This is a nice challenge for your...
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Reflections over Two Lines & Dilations
Students create reflections over two lines. In this reflections worksheet, students compare and contrast reflections over parallel and intersecting lines. They dilate figures and investigate the effect of the dilation using measurement...