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Exploring the Properties of Rectangular Prisms.
Students define properties of rectangular prisms. In this geometry instructional activity, students identify the relationship between two and three dimensional objects. They use Cabri technology to graph their figures.
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Exploring Properties of Rectangular Prisms
Learners explore the properties of rectangular prisms. In this geometry instructional activity, students identify properties of two and three dimensional shapes. They use Cabri technology to create polygons and solve problems.
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Exploring the Hinge Theorem
Students explore the application of Hinge Theorem. In this geometry lesson plan, students write inequalities, given two sides of a triangle. They solve problems with triangular inequalities using the proper theorem.
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Median of a Trapezoid
Learners 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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Exploring Trigonometric Ratios
Students identify the ratios of trig functions. In this trigonometry lesson, students construct triangles and use it to derive the values of sine, cosine and tangent. They use Cabri software to create the visual of the identities.
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Wind Tunnels
Young scholars build a simple wind tunnel and test out 2 glider wing shapes at different angles of attack. They record results and their observations just as engineers do.
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Constructing Midsegments of Triangles
Learners 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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Space and Shape in Geometry:
Young scholars are asked to visualize three-dimensional figures and apply this visualization to problem solving.
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Measurements
Seventh graders solve word problems involving real world situation. For this geometry lesson, 7th graders solve problems related to volume. They apply the formulas taught in geometry.
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Dream Bedroom Floor Plan
Students 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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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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The Minimal Distance Point from the Vertices of a Triangle
Young scholars calculate the distance from the vertex of a triangle to the center. In this geometry lesson, students find the shortest distance between a point and the vertex of a triangle. They relate this concept of distance to the...
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Special Segments in Triangles
High schoolers identify important properties of triangles. In this geometry lesson, students differentiate between medians, bisectors and altitudes in a triangle. They identify the properties of these important segments.
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Congruent Triangles - Is This Enough Information?
Seventh graders examine congruence postulates and apply knowledge to triangles in the world around them.
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Surface Area and Volume
Students are introduced to the notion of surface area and volume, learn the terminology used with surface area and volume and have experimented with the surface area and volume of different prisms.
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Triangle Congruence
Students use web applet to create congruent triangles. In this geometry lesson, students differentiate between congruent and similar. They create shapes online and drag those shapes around to create visuals of triangles.
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Geometry in the Real World
Eighth graders complete a unit of lessons on basic geometry concepts. They participate in a variety of activities, culminating in a project that involves publishing a booklet or a poster that presents the major geometry concepts from the...
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Trigometric Ratios
This lesson requires a worksheet that is not connected. It is integral to the lesson.
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What is a Tangram?
Students identify a tangram. In this geometry activity, students read Grandfather Tang's Story and retell each story using the tangrams on a flannel board. Students use tangrams to complete an included worksheet.
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The Tangent Ratio
Students calculate the tangent ratio given a right triangle. In this trigonometry lesson, students use a right triangle and the Pythagorean Theorem to solve problems.
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Teaching Polygons using Technology
Third graders utilize different types of computer programs, such as Microsoft paint and Microsoft Word to study and create different types of polygons. They use PowerPoint to create a story about a shape and others that it meets during a...
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Midpoint of a Segment
Learners revisit midpoint and segments by graphing on the TI or computer. This activity can be done with pencil and paper, but is more interactive if it is done on a TI-navigator.
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Investigating Equations of Lines
High schoolers investigate linear equations as they use technology (Cabri, Jr.) to explore the equations of lines in slope-intercept form. The technology allows learners to manipulate the line and observe the changes in the parameters of...
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Probability and Geometry
Students explore the ways Geometry can help solve probability problems. Students describe platonic solids and practice calculating probability using an online resource. They construct dice with various numbers of sides to demonstrate...