Lesson 2: Surface area of cubes, prisms, and pyramids

Before you have access to this lesson from the links below, click on “Materials” to see what’s covered. The exercise is expected to last for not more than 1 hour 3o minutes, and please, be ready to complete this lesson in ONE session. If you haven’t signed up for the IXL SKILLS package, the temporal login info that you purchase from the link below, will be valid for 48 hours.

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Warmup: The surface area of a cube is related to the side lengths. Find out how they are related in this exercise. The original cube has side lengths 1 unit, follow the instructions below and complete the table that follows.

  • Move the slider through a = 0.5, a = 1, a = 2, a = 3.
  • Observe the net of the cube as you move through the different values.

Find the surface area when the value of a is

(1.) 0.5

(2.) 1

(3.) 2

(4.) 3

(5.) What value of a gives the greatest surface area of the box?

(6.) Did you expect the surface area of the box to be halved when the value of a is halved? Why or why not?

Activity #1 (30 minutes)

1. Topic: Surface area of cubes, prisms, and pyramids(Applet).

2. Explainer Video: Surface area of cubes, prisms, and pyramids.

Practice Exercise (30 minutes).

Topic: Surface area of cubes, prisms, and pyramids.

Quiz Time – (Two sets: 30 minutes).

Topic: Surface area of cubes, prisms, and pyramids (to be taken while you are logged in).

  1. An applet.
  2. An explainer video on "Surface area of cubes, prisms, and pyramids".
  3. A skills exercise from the IXL website on "Surface area of cubes, prisms, and pyramids". The questions exhibit an increasing order of difficulty. 
  4. Two sets of quizzes on "Surface area of cubes, prisms, and pyramids". The questions exhibit an increasing order of difficulty, and an average score of 80% expected.