Curated OER
Determine the Coordinate of Transformations
Students investigate transformation on a coordinate plane. In this geometry lesson, students identify pairs of coordinates and their location on the grid. They perform rotation and reflection of each polygon.
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Geoboard Ideas
Learners build polygons on their geoboards. In this geometry lesson plan, students build and then draw it on paper and label it. Learners then switch with a partner to try an make a symmetrical shape.
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Reflections
Young scholars investigate image and pre-image. In this geometry lesson, students identify the reflection and rotation of different shape on a coordinate plane. They identify similarities and differences of image and pre-image of a...
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Cross Section and Slope
Students draw cross sections of given contour maps. In this math lesson, students interpret the different symbols used in the map. They determine slope and steepness through direct measurement.
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Using Concept Maps to Design 3D Spheres
Students create three dimensional shapes using concept maps. In this geometry lesson, students investigate the impact of mental schemas on humans. They collect data on this topic and plot their data on a coordinate plane.
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Sizing Up Shapes
First graders explore geometric shapes. For this math lesson, 1st graders sort shapes into groups and discuss the characteristics of the shapes. Students build geometric shapes using toothpicks and marshmallows.
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Cut It Out!
Students calculate the surface area of polygons. In this geometry lesson, students use spacial reasoning to find the answer to their problem. They analyze solids and create formulas to estimate the measurements of the area.
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Line and Shape Game
Learners play the "space-breaker" game, in which they are required to create a picture using shapes or lines called out to them) to reinforce the concept of geometric shape and line.
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Fractals
Students explore the concept of fractals. In this fractal lesson plan, students use applets to explore Koch's Snowflake, Sierpinski's Triangle, and other fractals. Students develop these concepts through exploration and teacher guided...
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How High did My Rocket go?
Students shoot off a rocket and measure the trig ratios relation. In this geometry lesson, students practice using an inclinometer to figure out how high their rockets fly. They measure angles and height and relate it to gravity and...
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Symmetry
Students identify the different symmetry in polygons. In this geometry lesson, students identify line, rotational and point symmetry in different objects. They find the symmetry with 90% accuracy.
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Translations
Students explore the concept of translations. In this translations lesson plan, students discuss similarities and differences between images and pre-images. Students apply translations to coordinates of figures. Students use patty paper...
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"The Greedy Triangle" by Marilyn Burns
Students discover which regular polygons can be used to tile a plane.
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Irregular Fractals
Students explore the concept of irregular fractals. In this irregular fractals lesson, students discuss how to find fractal dimensions through teacher led discussion. Students calculate fractal dimensions of various fractals.
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Faces of a Cube
Learners identify and correctly name three-dimensional solids; cones, spheres, and cubes. In this three-dimensional figures lesson, students build a cube by matching colored square faces to a correct word. Learners then...
Pennsylvania Department of Education
Creating Polygons
Students describe, make and compare polygons. In this creating polygons instructional activity, students identify properties of quadrilaterals and describe common features of two dimensional shapes.
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Exploring Arrangements of 2, 3, 4, and 5 Cubes
Students construct models of various tricubes, tetracubes, and pentacubes that are possible, classify n-cubes into different groupings, and draw these figures on isometric dot paper giving true perspective to what they visualize.
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Perimeter and Area of 2D Shapes
Students 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 creative...
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Geo Jammin By Design: Coordinated
Students watch the teacher draw on the chalkboard and try to determine the form being drawn. They use questions to determine Quadrant #1 of a coordinate plane.
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Taxicab Metric, Circle
Students create a circle using the taxi-cab metric. In this geometry lesson, students identify the properties of circles. They identify the idea of geometric shapes and how they come about.
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Polygons Defined
Fourth graders explore polygons. In this polygon lesson, 4th graders sort polygons according to their properties. Students discover the connection between polygons and the Greek language.
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Speaking Geometrically
Fourth graders are introduced to the vocabulary needed to identify the attributes of two and three-dimensional figures. They work together to create a word wall, which contains the geometric terminology being learned.
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Houses
Third graders use a number of problem solving strategies in this unit of lessons. They determine how to draw and model three-dimensional objects, use co-ordinate systems, determine probability of events, and identify paths of simple...
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Making Rectangles
Students study rectangles. In this math lesson, students use numbers, measurements and geometry to draw rectangles of varying sizes.