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Logic and Proof Writing
Students define inductive and deductive reasoning and write two column proofs. In this geometry lesson, students analyze arguments and draw conclusion. They define steps necessary to arrive at the correct answer when completing proofs.
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Distance Formula
Students calculate the distance between two points using the distance formula. For this geometry lesson, students derive the distance formula using the Pythagorean Theorem.
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Let the Sun Shine In: Energy Conservation
Students create a project applying their math skills as they discuss energy conservation. In this geometry lesson, students define vocabulary relating to the environment and energy conservation. They construct a building that allow lots...
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Lines in the Coordinate Plane
Students graph lines in a coordinate plane. In this geometry lesson, students graph lines on a coordinate plane, and identify the slope. They classify the lines as parallel or perpendicular and write an equation of a given line.
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Shape Hunt
Young scholars explore two-dimensional and solid shapes. In this shapes and patterns geometry lesson, students work with a partner to create identifiable objects using tangrams. Young scholars describe the attributes of their shape and...
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Measurement
Young scholars measure angles, perimeter, area and volume. In this geometry lesson, students define different ways to measure and solve for the perimeter, area and volume of geometric shapes. They analyze and process information to help...
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Amazing Fibonacci
Young scholars integrate the patterns of Fibonacci into music. In this geometry lesson, students apply the concepts of recursion, pattern and Phi or Golden Ratio to composing and playing music on various instruments. They lesson is...
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Comparing Area and Perimeter
Students solve problems by finding the perimeter and area of an enclosed area. In this geometry lesson, students differentiate between the area and the perimeter. They see how they relate and how to use it to maximize an enclosed area.
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Perpendicular Lines in the Coordinate Plane
Students investigate the relationship between perpendicular and parallel lines on a coordinate plane. In this geometry instructional activity, students differentiate lines based on their slopes.
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Regular Polyhedra
Tenth graders investigate the history of geometry and its different shapes. In this geometry lesson, 10th graders practice seeing three dimensional shapes and explain why there are only five polyhedra. They relate all the new materials...
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Why Doesn't SSA Work?
Students investigate the relationship between angles and their sides. For this geometry lesson, students prove why SSA does not work as a true angle side relationship theorem.
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Deric's Blotto
Learners solve the handshake problem and investigate triangular numbers. In this geometry lesson, students investigate Blotto games as they apply concepts of triangles and geometric theorems.
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Which Triangles are Right
Students apply properties of right triangles to solve problems. In this geometry lesson, students identify axioms and theorems using examples.
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Measuring Angles
Sixth graders identify and measure right, acute, obtuse, and straight angles. In this geometry lesson, 6th graders review the definition of each angle and are shown examples of each specific angle. Students use toothpicks, gumdrops, and...
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Area Unit
Learners solve the area for parallelograms,squares, rectangles, trapezoids, and triangles. In this geometry lesson, students compare and contrast two dimensional shapes and apply their properties to solving real life scenarios. This is a...
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Area
Young scholars solve problems involving area. For this geometry lesson, students calculate the area of an object and relate it to the area of the ocean. They define what exactly and area is and then solve problems relating to the real...
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Gravity, Angles, and Measurement
Students relate math to real life scenarios. In this geometry lesson, students launch a ball tracking each launch using a graph. They analyze their data for speed, angles and distance, trying to improve on each launch.
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Graphing Data
Students graph lines in a coordinate plane. In this geometry instructional activity, students graph lines on a coordinate plane, and identify the slope. They calculate the volume, area and perimeters of the shapes created on a coordinate...
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Shapes
Students identify attributes of different geometric shapes. In this geometry instructional activity, students view a PowerPoint presentation on shapes and use attribute blocks to examine the corners and edges of each shape....
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Patterns
Students explore simple patterns. In this mathematical thinking geometry lesson, students repeat clapping and snapping patterns, and determine what comes next in sound and movement patterns. Students recite "Hey, Diddle,...
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Building Buildings
Seventh graders investigate 2-D and 3-D objects. In this geometry lesson, 7th graders begin to understand spatial reasoning. Students look at pictures of the NYC Skyline and discuss what it looks like from different views. Students use...
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Shape Collage Pizza
Students identify shapes. In this geometry lesson, students cut out various shapes and create a "Shape Collage Pizza." Students glue their shapes onto a pizza template.
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Areas and Volumes
Tenth graders calculate the area and the volumes of polygons. In this geometry lesson plan, 10th graders review the formulas used to solve for the area and volume and explain to the class how they arrived at their answer. They search...
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Inequalities and Triangles
Students prove and apply theorems of triangle inequality and hinge theorem. In this geometry lesson, students will discuss which triangle is bigger and why. They will use theorems, such as Exterior Angle Inequality or the Pythagorean...