period 02 and 08 turn in all hw including your project from yesterday and bell ringer sheets

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

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.

You identified and named two-dimensional figures.

• Identify and name three-dimensional figures.

• Find surface area and volume.

• polyhedron

• face

• edge

• vertex

• prism

• base

• pyramid

• cylinder

• cone

• sphere

• regular polyhedron

• Platonic solid

• surface area

• volume

• 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.

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.

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

Identify Solids

B. Determine whether the solid is a polyhedron. Then identify the solid.

Identify Solids

The solid is formed by polygonal faces, so it is a polyhedron. The bases are hexagons. This solid is a hexagonal prism.

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.

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

A. Identify the solid.

B. Identify the solid.

C. Identify the solid.

• Do p. 70 – 71 1, 6, 9, 12, 15 as a class

• 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.

• 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.

Find Surface Area and Volume

Find the surface area and volume of the cone.

π π

Use a calculator.

.

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.

Find the surface area and volume of the triangular prism.

• Do p. 71 19, 22, 23, 38

• 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.

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

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