We build a little one, if we like how it works, then we scale it up.

So you're thinking holes through it?

(Izzie) Yes, that's what a prototype is.

(AnnMarie) How are we going to get it to move?

I think we should attach a string, or make a hole right here so we can tie a string here so we can pull it back.

I think we should tape a stick right here then we can just like, do that really easily.

Maybe we could just like, draw it on the board.

Like this... open, close.

[laughs] It would just like, sort of go around the bar.

You might not even need to make the loop all the way around it.

Even if that string just came down and under, that would work.

Oh yeah, I didn't think about that.

Two sticks and it closes both at the same time.

Are you thinking sticks or strings?

Maybe we should try both.

[buzzing] This is a really good idea.

Would it help if you put the bottom string over?

Yeah.

Oh that is pretty cool.

You guys, I finished this one.

You can show me first.

So this would be held in by the peg.

That's cool.

Let's see yours, Laci.

This helps like a pulley and it makes it open and close really easily.

Wow, that's really cool!

For Laci's design we would need 2.

This one you could go like this, and then you could also be squeezing a bellow to make smoke come out.

Laci's idea was really good, but you would need 4 hands to do the bellows and the eyes at the same time, and we don't really have 4 hands.

Usually humans have 2 hands.

I think we should take a vote.

So raise your hand if you want this one.

Sometimes when someone has an idea and someone else has an idea, then we're sort of like ah, I really want my idea.

Oh!

It was hard for Laci because she loved her prototype.

I like Laci's prototype too, but I don't think it would have been very good for our design.

Maybe it would be good for something that was like a Cyclops or something?