When it comes to helping your kids understand and apply the concepts of volume and surface area, real-world applications are key.

And there may be no better real-world connection than the familiar rectangular chocolate bar.

The following activity gives kids an opportunity to apply their understanding of volume and surface area, including formulas, in a chocolatey context.

The activity focuses on higher-level thinking applications and requires that students be familiar with finding the area, volume, perimeter, and surface area of rectangular prisms.

**Looking for an answer key?** *click here to download*

**Learning Standards:** Solve real-world and mathematical problems involving area, surface area, and volume. Represent three-dimensional figures using nets made up of rectangles and triangles, and use the nets to find the surface area of these figures. Apply these techniques in the context of solving real-world and mathematical problems.

**Looking for more fun math challenges and activities for your middle schoolers?**

**Have you used this activity with your kids yet? Share your thoughts, differentiations, and suggestions in the comments section below!**

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**By Anthony Persico**

*Anthony is the content crafter and head educator for YouTube's** MashUp Math** and an advisor to Amazon Education's '**With Math I Can**' Campaign. You can often find me happily developing animated math lessons to share on my **YouTube channel** . Or spending way too much time at the gym or playing on my phone.*