Hints:


We need something to aim this marble higher.
Maybe we can find something. Yes,
maybe something in the kitchen.
You look tired, little bear.
I'm not tired.
Maybe you should take a nap until father bear and mother bear come to get you.
But I have to stay up and finish our project.
All right, just until you finish the project.
I'm not tired.
Hmm. I'm not tired.