Curves, Points, and Sides

Scene

Description

Narration

1

A red dot appears on the screen. It stretches out horizontally into a line.

This is a point. If we stretch it out in one direction, what do we have?

2

That’s right, a line! Is this line straight or curved? You got it, straight.

3

The line curves.

How about now?

4

Yes, it’s a curve. A curve is a line with a smooth bend.

5

The line goes straight again, then expands into a square.

When we draw a line on the top, bottom, right, and left, we have a square. A square is a shape with four sides. But what is a side?

6

The sides are numbered 1-4. The square transforms into a triangle. The sides are numbered 1-3.

Sides are the lines that make a shape. This square has four sides. See? One, two, three, four. We can take away one side and make a triangle. How many sides does this have? Correct, three.

7

The triangle turns into a hexagon.

Or we can add more sides to make new shapes. How many sides does this one have?

8

The six sides of the hexagon are numbered.

You got it, six! That’s a hexagon.

9

We zoom into a corner of the polygon. We zoom back out. The corners are each circled. The hexagon turns to a triangle, and its three corners are circled. The triangle turns into a square, and its four corners are circled. Each side of the square is numbered 1-4.

What happens when two lines meet at an angle? We have a corner. A hexagon has six corners, and a triangle has three corners.  square has four corners. Wow, each shape has the same number of corners and sides!

10

The square grows into a cube, and begins to spin around. It rotates to show each face as it’s announced: top, bottom, left, right, front, back. It begins to rotate again.

Let’s turn this square into a cube. This is a cool shape! Now its sides are called faces. This shape has six faces: top, bottom, left, right, front, back. Where two faces meet, we have an edge. How many edges does a cube have? Count them yourself, and see what answer you find!