BOY: That's Isabella, me and Jesse.
We just took off this cushion
and made it like a stiff hill so this surfboard could go down.
It did it!
The surfboard, it kind of feels like it's slippery.
So it can go down like it's really in water
and going down the waves.
I'm going to try this little bird.
This bird doesn't listen.
Come on, birdie!
It just rolls down.
It cannot actually slide down the hill.
The surfboard feels smooth and the bird feels very rough.
It's like you can hear a sound coming out of the bird
when it's sliding.
(rustling)
Isabella and Jesse went to get this cardboard ramp.
And we're thinking that if we put it down
it would go really fast.
Okay, that's fast.
Look!
It slides down for once!
This new material is very flat,
so the bird can go faster than it did,
so it doesn't have to roll anymore.
ALL: Go!
Surfboard won!
BOY: Try making hills at home and sliding things down.