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Tenth graders explore Cabri Jr. In this geometry lesson, 10th graders investigate the menus, tools, and capabilities of Cabri Jr. as a tool to enhance student understanding. The lesson includes the construction of a triangle and the perpendicular bisectors of a triangle and an investigation into the sum of the measures of the angles of a triangle.
Hang a soda can from a string and watch it spin by the force created by water streaming out of slanted holes. This plan provides background information, detailed materials and procedures, discussion questions, a lab worksheet, and extensions. Six pages give you everything you need to teach the concepts of Newton's third law of motion to your physics fanatics!
An online reading and interactive game bring the path of a carbon molecule to life for your earth science explorers! As an assessment, learners can map out or write about their experience in the carbon cycle. Thoroughly written background information and links to related lessons and other resources are provided to help you easily develop a mini unit on the atmosphere and climate change.
Students perform activities to recreate the exploration of the sea bottom. They attach magnets to the bottom of the remote controlled car to see how many camouflaged objects it can pick up. As a class, students examine the results of driving the remote controlled vehicle. They describe their search pattern, it's effectiveness, and why it was important to camouflage the iron washers.
Eleventh graders discover the properties of the points of concurrency of a triangle. In this geometry lesson, 11th graders use paper folding, interactive geometry software, and construction to investigate the points of concurrency. Use of a real world problem provides context for the lesson.
Students investigate proofs used to solve geometric problems. In this geometry lesson, students read about the history behind early geometry and learn how to write proofs correctly using two columns. The define terminology valuable to proofs such as deductive and inductive reasoning.
Tenth graders apply their knowledge of similiar polygons to make conjectures about similarity among three-dimensional models. They test their conjectures by measuring three-dimensional objects and comparing corresponding lengths of edges and angle measures, surface areas, and volumes.
There are four activities in this extensive lesson covering the identity matrix and scaling, the linear representation of translations, the linear representation of rotations, and reflections. In small groups, they use the Cabri II computer program to move objects and make observations. In their groups, they discuss, solve and answer worksheet questions for each activity.
Tenth graders investigate geometric construction. In this geometry lesson, 10th graders explore the procedure for copying an angle and a segment. The lesson emphasizes the difference between a sketch, a drawing, and a construction and includes problem solving activities.
Tenth graders explore the concept of 3-D similarity of polygons. In this 3-D similarity of polygons instructional activity, 10th graders measure the lengths, widths, and heights of two boxes that students consider to be similar. Students work in groups to identify corresponding angles and sides among two 3-D figures.