# Interactive video lesson plan for: Volume of a Sphere

#### Activity overview:

You will learn about "Volume of a Sphere" in this video. Sphere is a perfectly round three-dimensional object. Let us find the formula to find the volume of a sphere.

For this, let us divide the sphere into equal sized pyramids with same base and height. We know that, Volume of a pyramid = 1/3 Area of base x Height. As the vertex of each pyramid coincides with the centre of sphere, the height of each pyramid is equal to the radius of the sphere. Thus, volume of each of these pyramids is 1/3Ar, where A is area of the base. Now, volume of the sphere is the total volume of all these pyramids. So, if the volume of the 1st pyramid is 1/3A1r, volume of the second pyramid is 1/3A2r, the volume of the last pyramid will be, say, 1/3Anr. Therefore, Volume of sphere = 1/3 r (A1 + A2... + An).

An important point is that base area of all pyramids together makes the surface area of sphere, i.e. 4 pi r2. Therefore (A1, A2... An) = 4 pi r2. Therefore Volume of sphere = 1/3 r * (4 pi r2) = 4/3 pi r3

Educational Videos for people of all ages: http://www.SmartLearningforAll.com

Tagged under: Kids,Children,Smart learning,Smart learning ,Education,Study,Learn,Animation,Volume (Dimension),Sphere,Secondary School (School Category),Mathematics (Field Of Study),Maths,Math,Volume Sphere,volume sphere formula animation,volume sphere formula,volume sphere integral,volume sphere formula,volume sphere demonstration,volume sphere proof

Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.

Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip

Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans

Play this activity

1. Students enter a simple code

2. You play the video

3. The students comment

4. You review and reflect

* Whiteboard required for teacher-paced activities

## Ready to see what elsecan do?

With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.

Quickfire

Carry out a quickfire formative assessment to see what the whole class is thinking

Discuss

Create interactive presentations to spark creativity in class

Team Up

Student teams can create and share collaborative presentations from linked devices

Clip

Turn any public video into a live chat with questions and quizzes

### Spiral Reviews by Teachers and Digital Learning Coaches

@kklaster

Tried out the canvas response option on @SpiralEducation & it's so awesome! Add text or drawings AND annotate an image! #R10tech

Using @SpiralEducation in class for math review. Student approved! Thumbs up! Thanks.

@ordmiss

Absolutely amazing collaboration from year 10 today. 100% engagement and constant smiles from all #lovetsla #spiral

@strykerstennis

Students show better Interpersonal Writing skills than Speaking via @SpiralEducation Great #data #langchat folks!