math 5 volume of right rectangular prism instructor: mrs. tew turner

Math 5Volume of Right

Rectangular Prism

Instructor: Mrs. Tew Turner

In this lesson we will learn how to calculate the

volume of a right rectangular prism.

Math Warm-up

1. 12 x (35 + 65)

2. (12 x 35) + (12 x 65)

Math Warm-up - ANSWERS

1. 12 x (35 + 65)= 1200

2. (12 x 35) + (12 x 65) = 1200

In this lesson we will answer the question:

How do you calculate the volume of a right rectangular prism?

Vocabulary Reviewgeometric solid- a figure that has three dimensions and takes up space

polyhedron – another name for a 3-D figure, which means ‘many faces’

Vocabulary Reviewvolume- the number of cubic units needed to fill a solid figure (measured as u3)

cubic unit – the volume of a cube that measures 1 unit on each edge

Vocabulary Reviewrectangular prism- A solid (3-dimensional) object which has six faces that are rectangles

prism – solid with two congruent parallel bases and faces that are parallelograms

Vocabulary Reviewrectangular prism- A solid (3-dimensional) object which has six faces that are rectangles

depth – extent downward or backward or inward; "the depth of the water"; "depth of a shelf"; "depth of a closet"

Connecting to Previous Learning

In the last lesson, you worked with cubic units to pack a 3-D figure and measure its volume. In this lesson, you will work on a formula to help you calculate the volume of a right rectangular prism.

Let’s look at some review examples for finding the volume of a solid.

http://www.mathvillage.info/node/111

A box measures 10 cm. long x 2 cm. wide x 4 cm. high.

Its volume is the amount of space inside. By finding the product of the length, width, and height, you will find the number of 1cm cubes that will fit in the box.

Guided Practice

We will work through a few problems together on this website.

http://tinyurl.com/bsjr2vy

Working Online

Get your notebook

and pencil ready.

Make sure you

have the Lesson #

and date on your

page.

In your Math NotebookIndependent Practice

http://www.mathsisfun.com/cuboid.html

Let’s look at this website together to review volume, then you will work on a few problems on your own. Once you have finished each problem, we will check them together.

Lesson Review

Finding the volume of a rectangular prism can be calculated using the following equation:

Length x Width x Height

Volume is measured in cubic units.

Quick CheckIn your Math Notebook

1.How do you calculate the volume of a prism?

2. If you know the volume of a

prism, and you know the width and depth, how can you determine the height?

Quick CheckIn your Math Notebook

Find the Volume of the rectangular prisms.

Quick CheckIn your Math Notebook

Find the Volume of the rectangular prisms.

Quick Check - ANSWERSIn your Math Notebook

1.Length x Width x Height2.Divide the volume of the prism by

the product of the width and depth.

Quick Check - ANSWERIn your Math Notebook

Find the Volume of the rectangular prisms.

6in x 6in x 3in = 108 in3

Quick Check - ANSWERIn your Math Notebook

Find the Volume of the rectangular prisms.

2ft x 3ft x 6ft =

36 ft3

Today you learned how to calculate the volume of a rectangular prism.

Good Work with this

lesson.