period 02 and 08 turn in all hw including your project from yesterday and bell ringer sheets get...
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Period 02 and 08• TURN IN ALL HW INCLUDING YOUR
PROJECT FROM YESTERDAY AND BELL RINGER SHEETS
• GET BUSY ON YOUR BELL RINGER BELOW.
Bell Ringer (5 minutes)
1-7 Worksheet on your desk.• p. 16 Complete the chart• Refer to your notes on 1-7 or go to p. 69
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Content Standards
G.GMD.3 Use volume formulas for cylinders, pyramids, cones, and spheres to solve problems.
Mathematical Practices
2 Reason abstractly and quantitatively.
6 Attend to precision.
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You identified and named two-dimensional figures.
• Identify and name three-dimensional figures.
• Find surface area and volume.
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• polyhedron
• face
• edge
• vertex
• prism
• base
• pyramid
• cylinder
• cone
• sphere
• regular polyhedron
• Platonic solid
• surface area
• volume
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• A solid with all flat surfaces that enclose a single region of space is called a polyhedron.
• Each flat surface is called a face.
• The line segments where the faces intersect are called edges.
• The point where 3 or more edges meet is called the vertex.
• Polyhedrons are named by the shape of their bases.
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Identify Solids
A. Determine whether the solid is a polyhedron. Then identify the solid. If it is a polyhedron, name the bases, faces, edges, and vertices.
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Identify Solids
The solid is formed by polygonal faces, so it is a polyhedron. The bases are rectangles. This solid is a rectangular prism.
Answer: rectangular prism;Bases: rectangles EFHG, ABDC
Faces: rectangles FBDH, EACG, GCDH,
EFBA, EFHG, ABDC
Vertices: A, B, C, D, E, F, G, H
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Identify Solids
B. Determine whether the solid is a polyhedron. Then identify the solid.
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Identify Solids
The solid is formed by polygonal faces, so it is a polyhedron. The bases are hexagons. This solid is a hexagonal prism.
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Identify Solids
C. Determine whether the solid is a polyhedron. Then identify the solid. If it is a polyhedron, name the bases, faces, edges, and vertices.
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Identify Solids
The solid has a curved surface, so it is not a polyhedron. The base is a circle and there is one vertex. So, it is a cone.
Answer: Base: circle TVertex: Wno faces or edges
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A. Identify the solid.
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B. Identify the solid.
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C. Identify the solid.
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• Do p. 70 – 71 1, 6, 9, 12, 15 as a class
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• A polyhedron is a regular polyhedron if all of its faces are regular congruent polygons and all the edges are congruent.
• There are exactly 5 types of regular polyhedrons. See p. 68. They are called Platonic Solids since Plato used them a lot.
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• Surface Area is a 2-dimensional measurement of the surface of a solid figure. The surface area is the sum of the areas of each faces.
• Volume is the measurement of the amount of space enclosed by a solid figure.
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Find Surface Area and Volume
Find the surface area and volume of the cone.
π π
Use a calculator.
.
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Find Surface Area and Volume
Answer: The cone has a surface area of about 75.4 cm2 and a volume of about 37.7 cm3.
r = 3, h = 4
Volume of a cone
Simplify.
Use a calculator.
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Find the surface area and volume of the triangular prism.
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• Do p. 71 19, 22, 23, 38
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• Chapter 1 Test Monday
• Skills Review – Packet Activity
You may write on the Skills Review Sheet.
Rules: You must do at least one problem from each skill per lesson. You have 10 minutes per round. We will do about 3 rounds. Finish the packet for HW.
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Period 02 – SKILLS REVIEWroup 1 Group 2 Group 3 Group 4Group 1 Group 2 Group 3 Group 4
Lesson 1-1 Lesson 1-2 Lesson 1-3 Lesson 1-4
Group 5 Group 6 Group 7 Group 8
Lesson 1-5 Lesson 1-5 Lesson 1-6 Lesson 1-7
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Period 08 – SKILLS REVIEW Choose your seatroup 1 Group 2 Group 3 Group 4Group 1 Group 2 Group 3 Group 4
Lesson 1-1 Lesson 1-2 Lesson 1-3 Lesson 1-4
Group 5 Group 6 Group 7 Group 8
Lesson 1-5 Lesson 1-5 Lesson 1-6 Lesson 1-7