Cardboard car ramp

How to make it

1. 

   1

   Lean the ramp

   Lean the cardboard against the couch or a step.

2. 

   2

   Tape the bottom

   Tape the bottom edge to the floor so it doesn't slip.

3. 

   3

   Draw the lanes

   Draw 2 or 3 lanes down the ramp.

4. 

   4

   Race 1

   Let a car go at the top. Watch it zoom.

5. 

   5

   Let them race

   Hand over the cars. Count down 3, 2, 1.

6. 

   6

   Make it steeper

   Prop it higher for faster cars.