**30 min. of practice**

https://www.khanacademy.org/math/basic-geo/basic-geo-volume-sa/volume-rect-prism/v/how-we-measure-volume

This source is a video explaining how to find the volume of various shapes. So it is the basics of everything volume.

https://www.khanacademy.org/math/basic-geo/basic-geo-volume-sa/volume-rect-prism/v/measuring-volume-with-unit-cubes

This next source explained how to find the volume by measuring unit cubes.

- 3-dimensions= how tall, wide,and deep something is.

https://www.khanacademy.org/math/basic-geo/basic-geo-volume-sa/volume-rect-prism/e/volume_with_unit_cubes

Now here, I am beginning to practice finding volume.

- Volume is measured by counting the number of cubic units.
- Top count X #of layers=volume

When I was completing this first exercise, I had only a bit of trouble but once I used the hints provided, I understood what was needed and when I finished, I earned myself 625 energy points.

https://www.khanacademy.org/math/basic-geo/basic-geo-volume-sa/volume-rect-prism/v/measuring-volume-as-area-times-length

This source is a video that taught me another way to find volume: measuring volume as area times length.

https://www.khanacademy.org/math/basic-geo/basic-geo-volume-sa/volume-rect-prism/e/volume_1

The goal of this practice was to find volume of a rectangular prism with labeled side lengths and find a missing side length on a rectangular prism when given the volume. I was able to complete this with a breeze while earning myself 125 energy points.

https://www.khanacademy.org/math/basic-geo/basic-geo-volume-sa/volume-rect-prism/a/volume-formula-intuition

The goal was to practice some problems that help me see why the volume formula makes sense.

## Volume formula intuition

The rectangular prism has
layers separated by color.

Each colored layer is made up of
unit cubes.

**What is the volume of the rectangular prism?**
cubic units

The rectangular prism has
slices separated by color.

Each colored slice is made up of
unit cubes.

**What is the volume of the rectangular prism?**
cubic units

https://www.khanacademy.org/math/basic-geo/basic-geo-volume-sa/volume-rect-prism/a/volume-of-rectangular-prisms-review

# Volume of rectangular prisms review

## What is volume?

**Volume** is the amount of 3-dimensional space an object occupies. Volume is measured in cubic units.

## Finding volume of a rectangular prism

To find the volume of a rectangular prism, we multiply the length of the prism by the width of the prism by the height of the prism.

VOLUME OF A RECTANGULAR PRISM=length X width X height

**For the rest of class: Project work time recap**

After the 30 minutes of practice were over, I continued making my 3-D shapes. Last class I was successful enough to complete a 3-D cube and find the surface area and volume. But today, I just stuck with the fun part of actually making the shapes. Today I made a 3-D triangular pyramid, a cone and a cylinder. The most difficult one to make had to be the cylinder but I got it made with the help of some tape.

Next class I hope to continue practicing and then find the surface area and volume for at least 1 or two of the shapes, or maybe even all three if I have enough time. If I am successful in that task, I suppose I could make more 3-D shapes (just to show I know a wide range of formulas for more than four shapes).

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