Functions are pieces of code and they're terrific!

You create them to do something specific

And functions can have all the stuff we talked about before

Like variables, loops, conditions, and more!

The best thing about functions is they are designed

To be used and reused many many many times!

A function is a bunch of code that has a set of steps

To complete a specific action

And you may not realize it

But in a way you complete functions in your own life every day

All the time

When you brush your teeth

Or tie your shoes

Or get on the bus

To go to school

You're completing a set of steps in order to do something specific

And that's just like a function!

Functions are pieces of code and they're terrific!

You create them to do something specific

And functions can have all the stuff we talked about before

Like variables, loops, conditions, and more!

The best thing about functions is they are designed

To be used and reused many many many times!

So let's create a function together to get our robot friend

To roast us a marshmallow!

The first thing we need to do is name the function to remind us

What it does, so we are going to name this function roastIt!

Inside the roastIt function we need to code the steps

Which are find a marshmallow

Poke the marshmallow through the stick

Hold the stick over the fire

Wait until the marshmallow is brown but not black

Take the stick away from the fire

Pull the marshmallow off and voila!

We just made a function!

Functions are pieces of code and they're terrific!

You create them to do something specific

And functions can have all the stuff we talked about before

Like variables, loops, conditions, and more!

The best thing about functions is they are designed

To be used and reused many many many times!

So let's talk about the best thing about functions

They are reusable!

Remember all those steps that went into creating the function?

Well, the next time you want to roast a marshmallow

You don't have to say all steps again

You can just call the name of the function!

Want another marshmallow right now?

Just call roastIt!

Want one tomorrow?

That's right, just call roastIt!

What about in six months?

Uh huh, roastIt!

And here's another cool thing

Functions can be created to be adaptable!

You could use the same function with the same steps

And bring in other things to roast, like hot dogs!

I sure do love functions!

Functions are pieces of code and they're terrific!

You create them to do something specific

And functions can have all the stuff we talked about before

Like variables, loops, conditions, and more!

The best thing about functions is they are designed

To be used and reused many many many times!