Chapter 30: Solid Figures and Volume

Lesson 1: Faces, Edges, and Vertices. Objective: To identify solid figures by their faces, edges, and vertices.

Lesson 2: Patterns for Solid Figures. Objective: To identify solid figures by their patterns.

Lesson 3: Estimate and Find Volume of Prisms Objective: To estimate and find the volume of rectangular prisms.

Lesson 4: Problem Solving Skill: Too Much/Too Little Information. Objective: To solve problems by using the skill *too much/too little information*.

Vocabulary: polygon, dimension, two-dimensional, three-dimensional, face, triangular prism, triangular pyramid, edge, vertex, net, volume, cubic units

**polygon:** a closed place figure with straight sides

**dimension:** a measure in one direction

**two-dimensional:** measured in two directions, such as length and width

**three-dimensional: **measured in three directions, such as length, width, and height

**face: **a polygon that is a flat surface on a solid figure

**triangular prism: **a solid figure with two triangular bases and three rectangular faces

**triangular pyramid: **a pyramid that has a triangular base and three triangular faces

**edge: **the line segment where two faces meet on a solid figure

**vertex: **a point where three or more edges meet on a solid figure; the top point of a cone

**net: **a two-dimensional pattern formed by polygons that can be folded to make a three-dimensional figure

**volume: **the measure of the space that a solid figure occupies

**cubic units: **units of volume with dimensions of 1 unit x 1 unit x 1 unit

Our textbook website: www.harcourtschool.com

Some good practice websites:

http://www.gamequarium.com/placevalue.html

http://www.softschools.com/math/games/

www.multiplication.com

www.funbrain.com