Curated OER
Why can't We Use SSA to Prove Triangles Congruent?
Pupils investigate triangles and congruences. In this geometry lesson, students differentiate between inductive and deductive reasoning. They differentiate between similar and congruent triangles.
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Interior and Exterior Angles of Polygons
Students identify interior and exterior angles of polygons. In this geometry instructional activity, students add interior and exterior angles of polygons. They use angle theorems to solve the problems.
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Isosceles Triangles
Students identify the properties of an isosceles triangle. In this geometry instructional activity, students find the midpoint, median and angle bisector of a triangle. They construct angle bisectors and measure missing angles.
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Constructing Midsegments of Triangles
Students construct midsegments. In this geometry lesson plan, students make conjectures and apply properties of triangles to solve problems. They complete an activity on the computer.
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The Minimal Distance Point from the Vertices of a Triangle
Students calculate the distance from the vertex of a triangle to the center. In this geometry activity, students find the shortest distance between a point and the vertex of a triangle. They relate this concept of distance to the real...
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Exploring the Hinge Theorem
Students explore the application of Hinge Theorem. For this geometry lesson, students write inequalities, given two sides of a triangle. They solve problems with triangular inequalities using the proper theorem.
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Triangle Side Lengths and Angles Measures
Students identify missing sides and angles. In this geometry lesson, students use triangular theorems to identify the missing sides. They use the Pythagorean Theorem to find the different ratios of each side.
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Creating Fractals
Students solve problems using fractals. In this geometry lesson, students identify properties of fractals. They find patterns in their surroundings and relate it to the real world and math.
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Median of a Trapezoid
Students find the median of trapezoids and other polygons. In this geometry instructional activity, students identify important properties of trapezoids. They create trapezoids and polygons using Cabri software.
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Quadrilateral within Quadrilaterals
Students investigate the properties of quadrilaterals. In this geometry instructional activity, students solve problems dealing with construction and designs. They work with quadrilaterals, midpoints and parallelograms.
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Areas of Polygons
Pupils calculate the are of regular polygons. In this geometry lesson, students create polygons on the computer and move it around to create different shapes. They explore the area of different polygons and how they inter-relate.
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The Dragon Curve Fractal
Students identify the properties of a dragon curve. For this geometry lesson, students identify sequences and patterns as they solve fractals. They investigate patterns found in nature.
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Dream Bedroom Floor Plan
Pupils build and apply concepts of geometry. In this geometry lesson, students create a building using proportions and scale drawings. They use Cabri technology to create a virtual drawing first.
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Orthographic Drawings
Young scholars investigate the creation of three dimensional drawings. In this geometry lesson, students analyze and complete orthographic drawings. They Cabri software to manipulate and move the drawings around.
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Orthographic Drawing
Students investigate orthographic drawings. In this geometry lesson, students identify properties of three dimensional drawings in space. They solve problems using volume and area formulas.
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Creature Design
Fifth graders create mathematical creatures. In this geometry lesson, 5th graders create a creature from regular and irregular geometric shapes. Students review vocabulary and construct an original creature based on a rubric.
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Fencing Your Backyard
Students use geosketch ro create a fence. In this geometry activity, students identify the amount of material and area needed to create a fence. They calculate the perimeter and surface area of their fence.
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Stained Glass Polygons
Students follow directions to make a stained glass window design of regular and irregular polygons with specific geometric elements. In this geometry lesson plan, students also analyze other classmate's designs.
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Compound Locus
Pupils investigate circles and compound locus. In this geometry lesson, students identify the distance from a point to a line. They use Cabri software to create lines and circles.
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Circumscribed Polygons
Students investigate polygons and construct ferris wheels. In this geometry lesson, students create a circle and differentiate properties of circles and polygons. They compare the relationship between angles and circumscribed polygons.
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Side Splitter Triangles
Students investigate the side splitter theorem. In this geometry instructional activity, students estimate and solve problems dealing with ratios and proportions. They identify angles created by lines that are parallel.
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Properties of Special Parallelograms
Students identify properties of trapezoids. In this geometry lesson, students are put into groups and use computer programs to analyze polygons. They drag and move the shapes around as they make predictions.
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Properties of Special Parallelograms
Students identify properties of parallelograms. In this geometry lesson, students label polygons as parallelogram or not. They define and label the properties of a kite.
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Dream Bedroom Floor Plan
Students construct using Cabri software. In this geometry lesson, students convert between units and apply the correct measurements to build objects. They create the room virtually and manipulate the shapes to the desired measurements.
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