Curated OER
Finding the Area and Perimeter of Polygons
Seventh graders practice finding the area and perimeter of polygons. In this polygon area activity, 7th graders brainstorm shapes and take a walk to locate shapes. Students record properties of shapes and use various shapes to make...
Curated OER
Measuring Perimeter
Have your class practice measuring the perimeter of various objects using this resource. Fifth graders place various-sized polygons in order (from largest to smallest). They use non-standard measuring tools to estimate the distance...
Curated OER
Calculating in Construction - Area
In this area worksheet, learners solve 6 short answer problems. Students find the area of a figure composed of regular polygons such as triangles, rectangles, squares, etc given a sketch of the figure.
Curated OER
Napolean Triangle
Students investigate the Napoleon triangle theory. In this polygon lesson, students differentiate between the boundary points, interior and lattice point of a polygon. They apply concepts of equilateral triangles to solve...
Curated OER
Pyramid in The Desert
Students investigate the Sierpinski triangle and calculate the ratio and area of the triangle. In this fractals instructional activity, students calculate parts of a Sierpincki triangle. They use Google Earth to help them construct the...
Pennsylvania Department of Education
A Geometric Scavenger Hunt
Fifth graders connect their knowledge of polygons and polyhedrons. In this geometric shapes lesson, 5th graders identify and classify two- and three-dimensional objects. Students construct a polyhedron out of polygons and describe their...
Curated OER
Similar Polygons
For this similar polygons worksheet, students identify the corresponding sides of polygons. They use proportions to solve problems. Students determine the scale factor of similar figures. This two-page worksheet...
Curated OER
Properties of 2D Shapes
Second graders determine how to name two-dimensional shapes by their properties. In this two-dimensional figure lesson plan, 2nd graders work in two groups. They work with the teacher to examine two-dimensional shapes and complete a...
Curated OER
Area of 2D Shapes Homework
In this geometry worksheet, students solve the area of 2D shapes starting with squares, rectangles, parallelograms, triangles, rhombi, trapezoids, circles, and ending with area of shaded regions. There are 20 questions.
Curated OER
Polygons Homework
In this polygons worksheet, students identify polygons that contain given parameters. They write definitions of polygons. Students find the measurement of exterior and interior angles of regular polygons. This two-page...
Curated OER
Area of 2D Shapes Multiple Choice
In this area learning exercise, students compute the area of circles, parallelograms and rectangles. This one-page learning exercise contains 5 multiple-choice problems. Answers are provided in this online learning exercise.
Curated OER
Terrific Tangrams
Third graders construct tangrams. In this tangrams lesson, 3rd graders manipulate basic shapes to construct tangrams. Students explore how shapes can be combined in different ways and develop spatial sense.
Curated OER
Regents Exam Questions G.G.9: Planes
In this planes activity, students solve 3 short answer problems. Students determine a true statement given lines perpendicular to a plane.
Curated OER
Planes and Lines
In this geometry worksheet, 10th graders determine the number of planes that can pass through a given point and are perpendicular to a given line. The one page worksheet contains one multiple choice question. Answer is...
Texas Instruments
Points, Lines, and Planes
Young scholars solve problems dealing with points, lines and planes. In this geometry lesson, students differentiate between parallel lines and planes. They find the intersection of lines and planes.
Curated OER
Polygon Perimeters
Fourth graders practice finding the perimeter of shapes. In this measurement instructional activity, 4th graders review the meaning of perimeter and work in groups to draw polygons with differing perimeters. Students share...
Curated OER
Geometric Concepts and Polygons
In this geometry worksheet, learners identify the altitude, perpendicular bisector, median, angle bisector and the area of different polygons. There are 33 problems.
Curated OER
Using R&R to Teach Mathematics
Second graders create a shape garden. In this polygons lesson, 2nd graders practice making shapes using a geoboard and read the book The Greedy Triangle by Marilyn Burns. Students also design a shape garden using construction...
Curated OER
Mandalas, Polygons and Symmetry
Students create a geometric pattern using mandalas, polygons and symmetry. In this geometry lesson, students analyze the mathematics involved in making the mandalas, including the shapes and symmetry. Students create their own mandalas...
Curated OER
Johnny Appleseed Origami
Second graders make an origami Johnny Appleseed. In this geometry lesson students follow folding instructions. They find different geometric shapes while they are folding. They create Johnny Appleseed's body and attach a face and hands...
Curated OER
Polygon Sum Conjecture
In this geometry worksheet, 10th graders identify the missing angles using the polygons sum conjecture. They measure exterior and interior angles using their angle theorems. There are 63 problems.
Curated OER
Geometry Practice: Area of Polygons #8
For this area of polygons worksheet, students solve 7 short answer and multiple choice questions about area. Students find the area of triangles given base and height, or points in the coordinate plane.
Curated OER
Similar Figures
In this similar figure worksheet, students find the length of a missing side of given triangles and quadrilaterals. This six-page worksheet contains 24 problems. Answers are provided on the last page.
Curated OER
Third Grade Geometry
Third graders describe 2D and 3D shapes. For this geometry lesson, 3rd graders watch a PowerPoint presentation showing the terms used when analyzing shapes: vertex, edge, angle, side, and face. They compare shapes to see what they have...