And I'm Possum.
Oh, hello, everyone.
I'm reading this book while Possum is outside playing.
He's going to be all hot and sweaty, and he'll come in wanting a nice, cold drink soon.
Oh hi, everyone.
I'm now going to throw it into the third hoop.
Oh, I missed!
Oh well, it's Sally's turn now.
Oh, but she's inside.
That's ok, I'll have her turn.
Right, jump, jump, jump – oop!
Oh, that was so much fun.
Oh, I really enjoyed that.
Oh, it is such a hot day.
Luckily, I have a nice, cold glass of water inside, and it's even colder, because I've put some ice in it from the freezer.
I'm so thirsty.
I need that drink.
Ha, ha, ha!
Is it nice and hot outside Possum?
Oh yes, it's very hot.
I want a nice, cold drink to quench my thirst.
This is very strange.
I'm going to need my magnifying glass for this.
Possum, what's the matter?
Is there something wrong?
No, nothing, Sally.
You just continue reading your book.
I don't want to worry Sally.
Remember when I told you that I put some ice in my nice, cold drink but look – now the ice is missing!
I'll need to check Sally's glass to see if there's ice in there.
Hmm, hang on.
She has ice!
I haven't got ice, and she has.
Did she take it?
No, no, no.
Oh, I can't be sure.
This is a real mystery.
What's the matter?
What are you looking at?
Um, hang on.
Sally, you're my friend, aren't you?
Oh yes, of course I'm your friend.
Please tell me.
Well, before, I had ice in my glass and you've got ice in yours and now mine's missing.
Did you take my ice?
No Possum, I got this ice from the freezer.
I filled up my glass and put the ice in it so I could drink it.
Have you tried your drink yet?
No, not yet.
Ooh, ooh, that's very cold.
How did it get so cold?
There's no ice in there.
Well, there was ice in there before, but it's melted.
When you went outside to play, the heat made the ice melt.
The ice in my glass will soon melt, too.
Oh, I get it.
I was so worried that it was missing, but it had just melted.
Oh yes, that's right.
Water really is an amazing thing.
When it comes out of the tap, it's a liquid and when you put it in the freezer, it turns into a solid, and it becomes ice.
Then, when you take it out, and you leave it in the heat, it melts again, and becomes a liquid.
Sally, can you watch ice melt?
Can we see it?
Why don't you grab the ice tray, and we can watch the ice melt?
That's great Possum.
Possum, why don't we do an experiment?
Let's get some glasses and fill them with different types of water, and see what the ice cubes do.
We can see which one melts the fastest.
We're going to need some glasses.
Let's get them.
Now we've got the glasses ready.
We've got hot water in this one.
Tap water in this one and this one's got cold water in it and this one's got no water.
Now we need to put an ice cube in each of the glasses, and as soon as we've done that, I will start the timer, and when the ice has melted, you let me know and I'll write down how long it took to melt, ok?
One, dun, dun, dun.
Now, Sally, now!
Sally, this is taking too long.
Why don't we go outside and play some hopscotch?
Ok, let's go.
Alright, let's go.
Oh Sally, look!
Sally, it's almost ready.
Sally, all of them have melted, but this last one has not.
Come on, let's go outside and play some soccer.
Good idea, let's go.
Oh, it's almost melted.
Sally, the hot water was the fastest.
Then the tap water, then the cold water, and the slowest was no water.
Oh, what a great experiment.
I really enjoyed that.
Well, why don't we clean this up and
I can get ready to make our muffins?
Alright, let's put this away.
Healthy coconut and carrot muffins.
Let's see what we need.
Now, we don't actually need a whole coconut.
What we need is shredded coconut.
The shredded coconut is the white stuff inside the coconut, which is what I have here.
We also need some coconut oil.
Oh, I know what the oil is.
That's the liquid that smells delicious.
Yes, that's right.
Oh, I put it in the fridge, Sally.
Should I get it?
Ok you get it, Possum.
You watch, he's going to get a real shock.
Hmm Sally, is this it?
Yes, that's the coconut oil.
It smells the same, but why has it gone white and hard?
Did someone come in and swap it over?
Possum, I can see you're trying to solve the mystery.
How about while you're trying to solve it, we watch some children learning about things that can melt?
That might give you a few ideas.
Oh yeah, let's watch.
Oh, that was great.
I'm learning a lot about this mystery.
Oh, I know.
When you put water into a tray and you put it into the freezer, it becomes hard.
Yes, it does and then you get a cup of water and you put some ice in the cup, and it slowly melts, like butter too.
If you put the butter into a hot pan, it melts.
That's right and cheese as well.
Yes, you put cheese on a pizza and put it into the oven, when it gets nice and hot, the cheese melts.
Does that mean that when some things get cold they become hard, and when they get hot, they melt?
That's exactly right Possum.
That means the mystery of the coconut oil has been solved.
Before, when it was in the fridge, it went white and hard, and now it's a liquid again.
That's right, Possum.
The liquid gets poured into the tray and in the freezer it's so cold that it becomes solid, which is ice.
The coconut oil, when you put it into the fridge, is cold enough for it to become solid.
So we're talking about liquids getting hard.
When they're hard, they've become solid.
Oh, that's great!
Well, are we ready to make our muffins?
First, you need to wash your hands, and I'll get a few things we need, like the flour, ok?
We're going to need a cup of flour.
Now we need some cinnamon.
We need some honey.
Now the coconut oil.
Hup, hup, hup.
Oh, Sally, it's your turn.
Oh, they smell great.
Oh Sally, I'm so glad we solved the mystery of the melting ice.
Oh yes, that was good.
We have learnt that some things can change when the temperature changes.
Oh and Sally, you've changed as well.
I haven't changed.
How have I changed?
You're wearing your hat.
You weren't wearing it earlier.
Oh, you are funny Possum!
Well, our time is up.
Thanks for watching.
See you next time.
Right, here you go Sally.
Hey! What happened to the ice in Possum's drink? Is this another case for Police Officer Possum or does Possum need to learn more about how things change?