FOCUS QUESTION
What are the properties of solid figures?
SPECIFIC OBJS.
1. Recognize faces, edges, vertices of solid and
classify solids according to the number and shape of their faces
2. Describe the physical world in terms of
geometric concepts and talk about mathematical findings.
CONTENT SUMMARY
Solids have faces, edges and vertices. The faces are the flat surfaces of solids.
The edges are the places where two faces meet. The vertices are the corners.
Singular vertex, plural vertices.
Solids are three-dimensional shapes. A prism is a solid, with two parallel faces
called bases. The other faces are always parallelograms. The prism is named by
the shape of its base. A solid is a
pyramid if it has 3 or more triangular faces sharing a common vertex. The base
of a pyramid may be any polygon. An
edge is formed where two faces meet. A
vertex is the point where three or more faces meet.
ENGAGE
Students, I want you to tell me what you understand by plane shapes and solid shapes. Try to formulate working definitions for same.
EXPLORE
Let's watch this video clip to learn more about plane shapes and solid shapes. If we look at the chart below, we can find the names of additional solid shapes.
Let's examine some of these solids. I want you to rub your fingers on the faces, along the edges and the vertices.
EXPLAIN
What are solid shapes and name the characteristics of solid shapes? Name the ones below and quickly name the number of faces, edges, vertices.
EXTEND/ELABORATE
Think of objects in your environment that have the shape of solids. Choose a partner and complete the table below.
Eg.
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SOLIDS
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EXAMPLES IN ENVIRONMENT
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Cylinder
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Tissue roll
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Cuboid
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Chalk box
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EVALUATE
1. Manipulate the solids given then complete the table below. Eg.
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