Geometry, Teacher\'s Edition

Goal:This lesson introduces students to the surface area and volume formulas of prisms.

Flashcards!The focus of these flashcards is to organize 3−dimensional formulas for area and volume. You could
use the following chart to help students begin to organize their flashcards.

TABLE1.9:

Surface Area Formula Volume Formula

Cube

Rectangular Prism

Triangular Prism

Hexagonal Prism

Additional Examples:

1. How much honey can 65 honeycomb cells hold if each hexagonal cell is^18 [U+0080][U+009D]long by^14 [U+0080][U+009D]
   deep? 2.64 in^3

http://www.flickr.com/photos/justusthane/1252907196/

Cylinders

Pacing:This lesson should take one to two class periods

Goal:This lesson introduces students to the surface area and volume formulas of cylinders.

Organization!Add the following rows to your table began in the previous lesson.

TABLE1.10:

Surface Area Formula Volume Formula

Cylinder

Visualization!Using soup cans or other cylindrical objects, show students the lateral face of a cylinder by peeling
the label from the can.Students will see the lateral face is a rectangle, not a circle.

Additional Example:

a. A drinking straw has is 11[U+0080][U+009D]long with a 0. 5 [U+0080][U+009D]diameter. How much

plastic is needed to form the straw? 17.28 in^2.

Chapter 1. Geometry TE - Teaching Tips