➕ 8th Grade Math · Unit 7
Volume
6 short narrated lessons in 1 chapter, each with pictures, a quiz with a hint and a second try, and an explanation for every answer.
Standards: 8.G.C.9
What your child will learn
Volume of cylinders, cones and spheres
- Volume of CylindersFind the volume of a cylinder by multiplying the area of its circular base by its height.
- Volume of ConesFind the volume of a cone as one third of the volume of a cylinder with the same base and height.
- Volume of SpheresFind the volume of a sphere using four thirds times pi times the radius cubed.
- Volume Word ProblemsSolve real-world problems with cylinders, cones and spheres, like filling a cup or a ball.
- Review: Cylinders, Cones and Spheres ReviewReview the volume formulas for cylinders, cones and spheres and using them in problems.
- Unit 7 Test: VolumeShow what you learned in the whole unit (Volume of cylinders, cones and spheres) by answering mixed questions.
Try a question from this unit
From the lesson “Volume of Cylinders”
What is the volume of this cylinder? Use 3.14 for pi.
Show the answer
62.8 cubic inches. The base area is 3.14 times 2 times 2, which is 12.56 square inches, and 12.56 times 5 is 62.8 cubic inches. The answer 31.4 forgets to square the radius.
Hint kids see after a wrong try: “Find the area of the circular base first. Then think about how many layers of that circle are stacked up.”
Key words
- cylinder
- volume
- cone
- sphere
- radius
- capacity
Try these lessons in Kids Shelf
Narrated lessons, pictures and quizzes for every grade from K to 8. Works offline.
