Princess Purl's Big Sleep Bitz & Bob

-Hello, I'm Bitz.

-And I'm Bob.

-BOTH:

-We love make and do.

And, with a little bit of know-how...

-BOTH:

-You can do it too!

Let's go!

# We can work it out

# Whoa, whoa, whoa, whoa

# Ah, ah-ah, ah-ah

# We can work it out

# We'll invent a way

# Through ideas and play

# Bitz and Bob will save the day

# Bitz and Bob, Bitz and Bob, Bitz and Bob! #

Do you remember how we used engineering to help us

wake up Princess Purl from the sleepy spell?

It does seem to ring a bell.

We had to lift the really heavy bell off the ground

so we could ring it to wake Purl up.

-Ah!

-Ah!

-Ah!

Oh, this yarn isn't strong enough to lift the bell.

Some things are really heavy, but engineers can help figure out the

strength of ropes and cables needed to lift, move and hold heavy weight.

-Now it's your turn to try.

-Woohoo!

Yarn is very strong

but look what happens when you separate the strands.

I don't believe it, Bitz.

It breaks really easily.

When strands are on their own, they're much weaker.

But put them together and they're super-strong. It won't break.

Hoo-yeah! That's great!

We needed something super-strong to lift the bell.

It's time for a Bitz Brain Blitz.

We tried to lift the bell with one piece of yarn,

but the bell was too heavy and the yarn wasn't strong enough.

But if we use more lines of yarn to lift the bell,

then the weight of the bell would be shared between them

and the yarn won't break!

If I twist it all together it would make a rope.

A rope strong enough to lift up the bell.

-Go, Bevel!

-Ha-ha!

Pull!

THEY HEAVE

Yes.

BELL CHIMES

PURL YAWNS

Oh, my shining sequins!

We did it!

Next, we're going to make our own super-strong lifters.

Look, we've got yarn, some bouncy balls to lift

and a bucket to carry the load.

When you've tied one strand of yarn to the bucket handle

you can see how many balls you can lift in it.

Whoops!

One strand can't lift five bouncy balls in the bucket.

Now we've tied two strands to the bucket.

Five, six bouncy balls.

It works!

The weight of the bouncy balls is spread out between

two strands of yarn, so they can lift more.

I wonder what will happen

if we twist two strands together like a rope?

Wow, the twisted yarn lifts loads of bouncy balls.

Let's try some more and a teddy bear too.

Hoo-yeah, the twisted yarn is super-strong.

-Looking good.

-It works!

Go, twisted yarn!

Have fun testing how much you can lift

with strands of yarn or cotton at home.

That's it. Steam Pink Style!

Keep engineering and inventing away to save the day.

-BOTH:

-You can do it too!