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[Dino and Coop singing]

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After the last lesson, you probably have a pretty good idea of how to make a map of a park. [Young girl drawing]

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However, what if instead of making a map of a park…

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…you wanted to make a map of an entire city?

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That might sound intimidating…

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…but thanks to scaling, it's a walk in the park. [People walking a dog]

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Or…a walk in the city.

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You know what we mean.

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Remember, the idea behind scaling is to take something really big…

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…and represent it in a way that's incredibly accurate, just a lot smaller.

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This idea is really important when we're trying to make a map of a park.

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We look at all of the stuff in it…

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…and represent smaller versions of it on a map. [Girl sat on a bench making a map]

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This process works just as well if we're making a map of a city.

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Let's see how this all works by looking at this city…

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…and this map of it.

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Much like with a map of a park, the map of the city is way smaller than the actual city. [Boy looking for the giant bridge which is behind him]

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That means we can see where stuff is at a glance…

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…instead of having to take four buses across town if we're wondering where a certain statue is.

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Not that we've ever done that.

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…Okay, fine, we took six buses, whatever.

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And as we saw in our park map, we can see that all the real-life objects in the city [Person looks out of a bus at a tiny statue]

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are shown in the map, just smaller.

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For example, see that long, straight street that runs all the way across the city?

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The map includes a smaller, similar shape.

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That way people will know where this street is.

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That said, big puddles don't generally end up on maps, so you still need to keep an eye

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out if you're going for a walk.

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Maps can't protect you from everything. [Boy reading a map falls into a giant puddle]

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Unless you make a raincoat out of maps.

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On second thought, maps are usually made out of paper, so you'll still end up pretty wet.

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Also, much like in our park map, the map of the city shows the relative sizes of different

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real-world objects.

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Take a look at these parks in the city: one park is really big…

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…while the other is much smaller.

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And, as if you hadn't already guessed, our map also contains two parks: a big one…

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…and a much smaller one.

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Which one you decide to play in, that's up to you. [Children playing in a park]

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And although maps make pretty crummy raincoats, they do make dandy kites.

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…Nope.

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Never mind. They make terrible kites. [Man using a map as kite looks dissapointed as it falls to the ground]

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Man…maps are useless.

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…Well. Except for…y'know. All the things we listed in this video. (Laughs) [Boy reading a map looks for the water fountain which is right behind him]

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