Teach your students how to find the volume of a rectangular prism by counting unit cubes and using a formula with this set of teaching slides designed for year 7 students.
How Do You Find the Volume of a Rectangular Prism?
When students first learn about volume, they usually learn how to stack unit cubes to see how many it takes to fill up a figure. This visual concept helps students understand that 3-dimensional objects are comprised of length, width and height. Once students grasp the idea of stacking and counting unit cubes, they can move on to using the formula for volume.
To find the volume of a rectangular prism, you need to multiply its length, width and height. The formula for finding the volume of a rectangular prism is:
Volume = Length × Width × Height
For example, if you have a rectangular prism with a length of 6 units, a width of 4 units and a height of 5 units, you would calculate the volume as follows:
Volume = 6 units × 4 units × 5 units
The volume of the rectangular prism is 120 cubic units.
With this set of teaching slides, students will be guided through the following concepts:
- The definition of volume
- Using unit cubes to find the volume
- Using a formula to determine the volume of a rectangular prism
Tips for Differentiation + Scaffolding
A team of dedicated, experienced educators created this resource to support your maths lessons.
If you have a mixture of above and below-level learners, check out these suggestions for keeping students on track with the concepts:
🆘 Support Struggling Students
Help students who need help understanding the concepts by providing students with snap-cubes to create rectangular prisms. Students can count each block to determine the volume and then work towards using the formula to calculate.
➕ Challenge Fast Finishers
For students who need an additional challenge, encourage them to find the volume of composite figures comprised of two rectangular prisms.
Easily Prepare This Resource for Your Students
Use the dropdown icon on the Download button to choose between the editable PowerPoint or Google Slides version of this resource.
This resource was created by Cassandra Friesen, a Teach Starter Collaborator.
Don’t stop there! We’ve got more activities and resources that cut down on lesson planning time:
Practise finding the volume of rectangular prisms and cubes with this set of differentiated worksheets. A poster that explains the concept of volume and lists associated vocabulary. Build number sense skills with this set of 26 task cards.
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