In these lessons, we will learn what is volume and how to calculate the volume of a rectangular prism. These lessons are suitable for grades 5 and 6.

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Volume as the amount of 3-dimensional space occupied by an object. Volume is measured in cubed units such as (mm

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 1cm

Since there are 4 layers and each has a volume of 20 cm

The 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.

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