Lessons and Tools for Teachers

#### Lessons for Polyhedrons

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• Investigating Nets and Polyhedra - … Objectives Students will: * create a net for a given polyhedron * determine the corresponding polyhedron for a given net. Grouping for Instruction * * Whole … an object qualifies as a polyhedron. Allow other students to question whether an object is a polyhedron. 4. Say: "Consider objects in … . Can you predict what the resulting polyhedron will look like? Describe or sketch the polyhedron you predict will result next to the …
• They'Re Everywhere! They'Re Everywhere! - … , which is called a polyhedron. A polyhedron is a three dimensional shape made of polygons. Have students build polyhedrons with their toothpick polygons … of their polyhedron. Have the groups exchange the descriptions. Each group will now try to build another group's polyhedron. Ask the … students if every group built the same polyhedron. (no) Ask students how many possible polyhedrons there are in the world. (too many …
• 3-D Figures: Vertices, Faces, Edges - … and observing the students. TTW use polyhedrons already constructed to name each part of all the polyhedrons: the flat surfaces are called … edges on their polyhedron they have constructed and record answers in the chart. Polyhedron Name Tetrahedron (pyramid) (cube) Polyhedron Chart Faces Vertices Edges … polyhedra in the polyhedron chart. TTW have the whole class use the formula with the other four polyhedrons in the polyhedron chart. TTW …
• How Many Regular Polyhedrons Are There In This or Any Universe? - … it!) Regular Polyhedrons A polyhedron is a "solid" three-dimensional figure analogous to the two- dimensional polygon discussed above. Polyhedrons have vertices, edges, and faces which to Euclid had dimensions of zero, one, and two respectively. If a polyhedron has … of Mathematics." Princeton NJ: Princeton University Press, 1970. Wenninger, Magnus, "Polyhedron Models". London: Cambridge University Press, 1971. (end of bibliography section …
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• Shape Up - … constructing polyhedrons. The students will observe their surroundings to identify these geometric shapes and relate them to the building of polyhedron structures … and polyhedrons. â¢ Identify polygons alone and in structures. â¢ Create structures using polygons. â¢ Predict and record data concerning the strength of polyhedrons. â¢ Use … is her holding the polyhedron. ASK, âCan anyone tell me the name of the structure?â Allow responses. (Polyhedron) SAY, âLetâs watch …
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• Where Is Polly Gone? - … shape. Materials For teacher: preconstructed figure made of polygons and polyhedrons taped together to resemble a scarecrow 2. Tell students to … home and find polyhedrons and polygons. I want you to write down where you see these polygons and polyhedrons and what they … polyhedrons. Math/Art: Provide students with various materials (straws, construction paper, geoboards and colorful string) to create their own polygons and polyhedrons