Students identify basic geometric shapes using Geogebra. In this geometry lesson plan, students work on a laptop as they explore different geometric shapes. They calculate the area and perimeter of triangles.

Students calculate the area of different polygons. In this geometry lesson, students find the area for trapezoids, rhombuses and kites.

Students explore geometric solids. In this geometry lesson, students listen to the book The Greedy Triangle by Marilyn Burns, then work in groups to sort geometric solids into various categories. Students define geometric solids...

First graders explore shapes. In this geometry lesson, 1st graders make shapes with geo-boards, use play-dough to make three-dimensional figures, and make a shape book using pre-cut shapes.

Tenth graders explore congruent triangles.  In this geometry lesson, 10th graders investigate the conditions necessary to prove two triangles congruent.  The lesson combines dry erase board activities and the use of technology.

Students investigate proportion and ratio. For this geometry lesson, students set up the ratios of proportions correctly and solve for the unknown. They relate it to word problems.

Students create a quilt, using different patterns. In this geometry lesson, students apply prior knowledge as they use different patterns to help them create a quilt using transformations and geometric shapes.

Second graders investigate polygons. In this geometry lesson, 2nd graders practice identifying characteristics of polygons on the overhead using a T-45 calculator display. Students play the game "Guess My Rule" to identify what polygons...

Students explore symmetrical design and lines of symmetry.  In this fourth grade geometry lesson, students create their own symmetrical design and identify and label the lines of symmetry.  Students use one design to create a...

Students explore lines of symmetry in geometric shapes. In this geometry lesson, students construct angles using mirrors and rubberbands, then predict the number of images that will appear in the reflection. Students reproduce lines of...

Tenth graders investigate the theorems of ASA, AAS, AAA and ASA. In this geometry lesson, 10th graders discuss the theorems of triangles and how it is used to solve for missing sides or angles. They review how two angles are formed by...

Tenth graders investigate the theorems of ASA, AAS, AAA and ASA. In this geometry instructional activity, 10th graders discuss the theorems of triangles and how it is used to solve for missing sides or angles. They review how two angles...

Students differentiate between the weights of an object on different planets. In this geometry lesson, students investigate different weights and graph their results as it relates to the different planets. They appreciate the design of...

Students solve problems using the pythagorean Theorem. In this geometry lesson, students complete proofs using the Pythagorean Theorem. They share their proofs and solutions with their classmates and family members.

Students draw diagrams to help them solve word problems. In this geometry lesson plan, students follow step by step directions to set up a word problem and solve it. They write a paper on their prefer rules or strategies.

Students analyze, create, and record repeating patterns. In this geometry instructional activity, students create shapes using patterns and keep track of the different shapes. They incorporate transformation and reflections into their...

Fourth graders design a figure using the given geometric shapes from a set of tangrams. They manipulate common shapes to analyze and make new figures. They complete a worksheet associated with the activity.

Eighth graders engage in a lesson that is concerned with examining two dimensional figures with different properties that include circles, triangles, queadrilaterals, etc... They identify the types of figures that is identified as polygons.

Students find the volume of spheres. In this geometry lesson plan, students measure and derive the formula for each shape and solid. They use the correct terminology and units when solving these problems.

Students identify different properties of parallelograms. In this geometry instructional activity, students complete problems that proves the theorems and properties of parallelograms. They graph the different shapes on paper.

Students research how engineers and scientists generate linear and angular measurements with geometry to survey the Earth and Mars. They assess how geometric shapes affect navigation. A surveyor comes to the classroom and explains how he...

Students engage in a lesson that focuses on analytic geometry. The lesson asked them to apply skills of relating equations when plotting them on the coordinate plane. Students construct the equations using specific criteria and apply them.

Students identify shapes, create shapes, and make a pyramid, a drum, and a sail using their shapes. In this shapes lesson plan, students also identify plane and space shapes.

In this online math activity, students consider a variety of scenarios which include elements of geometry and probability. This excellent resource allows the students to check their answers, and to get "hints" should they run into...