and you've seen some of their capability, we'd like to know what it is that you want to do with it.

We wanted to compare a new oyster reef with an old reef, and we wanted to see if the new reefs are really working.

This is just the standard Sea Perch that comes in the kit that anyone can build, but we have some modifications that we've made to them, and you can brainstorm and see what would be best for your mission.

Okay, that would be great!

This is our project laboratory where we design things.

(SciGirls) Cool!

(Angela) Think of this as your toy box, that is a Sea Perch kit.

And this is everything that your Sea Perch was made out of, that you just used; all the parts are in there.

So we have some Sea Perch we've modified.

These are ones that our students here have used.

This one was made with the same kit, but look at it.

(SciGirls) Oh wow!

It's a lot different.

Then this one is really different.

You can make it any shape you want to.

(Angela) You said you might want to use a camera?

(SciGirls) Yeah.

(Angela) What's really neat about this is, the output goes, right there in this little TV screen.

(Hunter) That is really cool!

(Angela) Now you've seen some examples of the Sea Perch we've modified, and some of the tools we have for you to use.

I'd like you to sit down and brainstorm about it.

What shape should our Sea Perch be and what kind of motor should we use?

We might need something that would keep up with all the weight that might be putting on it by the camera and the bags, so it's stronger.

(Jade) So we might need those big motors.

(Akina) How are we going carry the bag?

(Jade) We could do a claw.

So you have a motor here and a motor here, and then once we need a release, we turn these motors this way and then it will like-- that's good!

(Akina) Jade loved the brainstorming.

I think she does think like an engineer.

Why don't we draw a picture of it so that we can have a plan when we start building.

(SciGirls) Yeah.

♫♫ How's it going?

Good.

Is this your design?

Yeah, it's basically a mixture of this Sea Perch and this other structure.

Plus the features on this.

(Akina) Yeah, for our claw, we're going to have two small motors Then they'll close on the bags to hold it in.

Our first design had these 2 claws that would come in and grab the oyster sacks.

Jaye told us: In engineering, the more complex things you have, the more there is that can go wrong.

So we decided to remove the 2 motors and replace it with a hook.

I think you have some great ideas here; time to start building.

♫♫ [making a sustained tone] ♫♫ [whirring] ♫♫ [SciGirls laugh] ♫♫ It's going to be really fun watching something that we built actually do something to make a difference.

♫♫ [SciGirls cheer]