Lesson Plan
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Concurrent Lines in Triangles

For Teachers 9th - 12th
Students explore the concept of concurrent lines in triangles. In this concurrent lines in triangles lesson plan, students work in groups to investigate properties of concurrent lines in acute, right, and obtuse triangles. Students use a...
Lesson Plan
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Surface Area of Prisms

For Teachers 9th - 11th
Students calculate the surface area of different prisms. In this geometry lesson plan, students identify the shapes of solids based on the properties of that solid. They calculate the surface area using nets and properties of prisms.
Lesson Plan
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Surface Area of Spheres

For Teachers 9th - 12th
High schoolers identify the properties of a sphere. In this geometry lesson, students calculate the surface area of spheres using the formula derived by nets. They identify the radius and diameter of the sphere.
Lesson Plan
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How Does a Satellite Stay in Orbit?

For Teachers 6th - 8th
Students explore placing a satellite into orbit, then about forces needed to keep an object in orbit. They examine how satellites orbit in elliptical paths and about properties of ellipses. They learn Kepler's 3rd Law of Planetary Motion
Worksheet
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Geometry

For Students 7th - 8th
In this line and angles worksheet, students explore basic geometry vocabulary.  They classify polygons.  Students determine the area and perimeter of given shapes.  They examine the parts of a circle, find volume and...
Lesson Plan
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Exploring Characteristics Needed to Prove Two Trianlges Congruent

For Teachers 10th
Tenth graders explore congruent triangles.  In this geometry instructional activity, 10th graders investigate the conditions necessary to prove two triangles congruent.  The instructional activity combines dry erase board...
Lesson Plan
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Sports Bag

For Teachers 6th - 9th
Students determine an efficient layout of the pattern pieces needed to make a sports bag with given dimensions and specifications. Given a word problem, data set and a diagram, students evaluate the information they have available and...
Lesson Plan
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Properties of Fractals

For Teachers All
Students build a working definition of regular fractal, look carefully at the concepts of dimension and scale, and are introduced to logarithms. They solve simple exponential equations for the exponent both by trial and error and using...
Lesson Plan
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Properties of Fractals

For Teachers 6th - 8th
Students build a working definition of a regular fractal, they measure the concepts of dimensions and scale, they explore the concept of a logarithm and they attempt to solve simple exponential equations for the exponent both by trial...
Lesson Plan
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Exploring Arrangements of 2, 3, 4, and 5 Cubes

For Teachers 8th - 10th
Students use problem solving skills to create various models of tricubes, tetracubes, and pentacubes. They classify the cubes into various groupings and identify them as mirror images, regular arrangements, and irregular arrangements....
Lesson Plan
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Geometry, Measurement & Reasoning

For Teachers 7th - 9th
Students complete worksheets involving rotational symmetry. In this geometry lesson, students complete worksheets to identify rotational symmetry and rotations. They compare and contrast rotated figures. Students examine the relationship...
Lesson Plan
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Finding the Area of a Parallelogram with Translations

For Teachers 8th - 10th
Students calculate the area of parallelograms. In this geometry instructional activity, students identify properties of parallelograms and use to to solve problems. They create polygons using Cabri software.
Lesson Plan
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Incredible Edible Bridges

For Teachers 7th - 10th
Students create a bridge using engineering and geometric concepts. In this geometry instructional activity, students identify the missing measures of polygons sides and angles. They work together to solve real life situation using...
Lesson Plan
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Dilations- What a Stretch!

For Teachers 9th - 10th
High schoolers perform dilation on various geometric shapes. They also discuss pros and cons of dilation and employ the Frayer Model to study the vocabulary words in this section.
Lesson Plan
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Reflections over Two Lines & Dilations

For Teachers 7th - 9th
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...
Lesson Plan
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Fun With Fractals

For Teachers 7th - 11th
Pupils use fractals to analyze nature. In this geometry lesson, students work in groups using technology and math to communicate. They identify where in the real world fractal can be seen.
Lesson Plan
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Transformations

For Teachers 5th - 6th
Students draw on graph paper. In this geometry lesson, students review types of triangles and quadrilaterals. Students investigate geometric transformations, including translation, rotation and reflection. Students practice each...
Lesson Plan
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Make a Box

For Teachers 10th - 12th
Students use specific dimensions to create a box. In this geometry lesson, students analyze the different properties of two and three dimensional shapes. They make conjectures and use it to solve problems.
Lesson Plan
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Triangles in Architecture

For Teachers 10th - 12th
Students find triangles in the real world. In this geometry lesson, students analyze and identify properties of two and three-dimensional objects. They differentiate between similarity and congruence.
Lesson Plan
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Mathematics in Robotics

For Teachers 10th - 12th
Students build and create using math. In this geometry lesson plan, students differentiate between congruent and similarity as they observe polygons. They create robots with different functions using properties of geometry.
Lesson Plan
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Proportional Similarities

For Teachers 8th - 10th
Learners model the geometric relationship with graphing. In this geometry lesson, students differentiate between parallel, perpendicular, similar and congruent shapes. They use properties of polygons to differentiate their shapes...
Lesson Plan
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Regular Polygons

For Teachers 5th
Fifth graders explore polygons. In this math activity, 5th graders find examples of regular polygons in the classroom and measure the sides of figures to determine if they are regular polygons.
Lesson Plan
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Introducing Angles

For Teachers 6th
Sixth graders identify, compare and interpret the characteristics of polygons and angles in order to meet spatial sense, geometry and measurement standards. They also sort shapes into three categories, polygons (regular and irregular)...
Lesson Plan
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Sketching Cones

For Teachers 9th - 12th
Students sketch cones and identify its properties. In this geometry lesson, students calculate the surface area and volume of each three dimensional shape. they define and sketch prisms, pyramids and cylinders.