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Lesson Plan
Curated OER

Triangle Inequality Theorem

For Teachers 7th - 9th
Learners identify properties of triangles. In this geometry lesson plan, students create triangles using three different segments. They make conjectures and predictions.
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Lesson Plan
Curated OER

Compass Designs

For Teachers 8th - 10th
Young scholars investigate the properties of two and three dimensional objects. In this geometry lesson plan, students differentiate polygons based on similarity and congruence. They make observation and interpret the data.
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Lesson Plan
Curated OER

Make a Box

For Teachers 10th - 12th
Pupils 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.
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Lesson Plan
Curated OER

CSI Investigation

For Teachers 8th - 10th
Students solve real life situation using the Pythagorean Theorem. For this geometry lesson, students calculate the length, midpoint and slope of segments. They solve word problems using properties of square roots.
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Lesson Plan
Curated OER

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.
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Lesson Plan
Curated OER

Understanding Reflections by Paper Folding

For Teachers 10th - 12th
Students  investigate reflections and rotations. In this geometry lesson, students perform hands on experiments as they study reflections in the axis and over a line. They investigate human factors and work physiology, relating it to math.
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Lesson Plan
Curated OER

Identifying Lines of Symmetry

For Teachers 8th - 10th
Young scholars calculate the lines of symmetry using polygons. In this geometry lesson, students graph, compare and estimate using collected data. They identify different attributes to the polygons based on their sides.
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Lesson Plan
Curated OER

Studying Special Segments in Triangles

For Teachers 8th - 10th
Learners investigate special segments in triangles. In this geometry instructional activity, students graph, compare, estimate and predict findings based on their data. They differentiate between similarity and congruence of triangles.
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Lesson Plan
Curated OER

A Cylinder and Its Net

For Teachers 7th - 12th
Students sketch the nets for given polygons and cylinders. In this geometry lesson, students find the measurements that correspond with prisms, cones and cylinders. they identify parts of three-dimensional shapes.
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Lesson Plan
Curated OER

Surface Area of Pyramids

For Teachers 9th - 12th
Students identify the surface area of pyramids and other polygons. In this geometry instructional activity, students find the different measurements for the different parts of a polygon. They use the surface area formula to solve for the...
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Lesson Plan
Curated OER

Tessellation Trial and Error

For Teachers 5th - 8th
In this interactive instructional activity, students review attributes of equilateral polygons. They are introduced to the concept of a tessellation. Using protractors and pre-cut shapes, students arrange a variety of tiles to create...
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Lesson Plan
Curated OER

What's Your Design?

For Teachers 6th - 8th
Sixth grade students: design a stained glass window, submitting their initial plan detailing the measurements of all lines and angles. Seventh grade students: create a scale drawing of their own geometric family of four members.
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Lesson Plan
Curated OER

Perimeter

For Teachers 5th
Fifth graders create math word problems. In this geometry instructional activity, 5th graders define perimeter and discover how to find the perimeter of a rectangle, a square and a regular polygon. Students write word problems on finding...
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Worksheet
Curated OER

The Isosceles Triangle Problem

For Students 10th
In this geometry worksheet, 10th graders solve a problem involving an isosceles triangle.  The problem appears to be deceptively easy, but instead requires the use of trigonometry to arrive at a correct solution.  The one page worksheet...
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Lesson Plan
Curated OER

Strongest Polygon

For Teachers 9th - 12th
Learners define and identify shapes by name. In this geometry lesson plan, students construct, identify and compare polygons based on the number of sides. They classify each shape based on their angle sum theorem.
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Lesson Plan
Curated OER

Speedy Area

For Teachers 8th - 10th
Students calculate the speed, rate and distance. In this geometry lesson, students calculate the area and perimeter of polygons. They perform an activity with a CEENBoT and calculate the distance and speed.
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Lesson Plan
Curated OER

Charting a New Course

For Teachers 9th - 11th
Young scholars calculate the distance they will travel. In this geometry lesson, students use the TI and CBL system to make calculation of a certain path. They explore geography by calculating distances between different areas as it...
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Lesson Plan
Curated OER

Arc Length - Horse

For Teachers 9th - 12th
High schoolers define an arc and calculate its length. In this geometry lesson, students find examples of arc in the real world. They show their understanding of arcs through problem solving.
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Lesson Plan
Curated OER

Sum of Interior/Exterior Angles with Wilbur

For Teachers 7th - 10th
Students identify the interior and exterior measures of polygons. In this geometry lesson, students identify the formula for interior angles of polygons. They differentiate between triangular and polygons angles.
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Lesson Plan
Curated OER

Design-A-Room Project (Part 3 of 3)

For Teachers 5th - 7th
Students culminate a unit on measurement with a focus on area and perimeter. They design a floor plan of their dream room on graph paper showing the proper area and perimeter. They plan the budget for their room and make a 3-D scale...
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Lesson Plan
Curated OER

Slopes of Perpendicular Lines

For Teachers 10th
Tenth graders investigate slopes and perpendicular lines using the TI. In this geometry lesson, 10th graders graph perpendicular line on the Ti and adjust to explore the slope. This assignment can also be done on graph paper
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Worksheet
Curated OER

Angles

For Students 6th - 8th
In this math learning exercise, students measure a series of angles. Then they measure the angles in the triangles and determine the sum of the angles.
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Lesson Plan
Curated OER

Finding the Basal Area of a Forest Plot to Determine Stocking Levels

For Teachers 9th - 12th
Learners use graphs and plots to measure the basal area and stocking levels.  In this graphing instructional activity students work in the field the use their data to help them complete a lab activity. 
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Lesson Plan
Curated OER

6-8 Interior Design: Designing My Dream Room

For Teachers 7th - 9th
Students analyze interior design as a profession. In this interior design lesson, students design their own dream bedroom and explore interior design as a profession. Students draw a scaled drawing using graph paper and appropriate...

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