In these lessons, we will learn what is volume and how to calculate the volume of a rectangular prism.
These lessons are especially suitable for grades 5 and 6.
Volume as the amount of
3-dimensional space occupied by an object. Volume is measured in cubed units such as (mm3
A prism has 3-dimensions. It has a length, width and
height. The height of the prism will indicate how
many layers of cubes are in the prism.
First find the volume of one layer. For example in the prism
below students would determine that the top layer is composed of four
rows of five 1cm3
blocks. Therefore the volume of the top layer would
be 20 cm3
( 4 x 5 = 20).
Since there are 4 layers
and each has a volume of 20 cm3
, the total volume of the prism must be
(4 groups of 20 cm3
volume of a rectangular prism can be found by multiplying the length
by the width by the height.
The general formula is V = l × w × h, where V =
volume, l = length, w = width and h = height.
How to determine the volume of a prism by analyzing layers and counting cubes?
Explains the concept of volume using a rectangular prism.
Volume of Prism
Calculate the volume of a rectangular prism using the formula V = l x w x h.
How to measure the volume of three-dimensional figures by counting unit cubes?
Grade 5 Math, Find Volume with cube units
How to find the volume of a rectangular prism made of several cubes?
Why the volume doesn't double when the measure of the cubes double?
An explanation of cubic inches, cubic centimeters, cubic feet, cubic yards.
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