Math 4: Even More Angles

Not to freak you out or anything, but there are angles living among us. Good luck falling asleep tonight.

4th GradeMath
Elementary and Middle School4th Grade
LanguageEnglish Language

Transcript

00:23

Hey, you even know how to take their exact measurements! [Protractor flies into the boys hand]

00:27

You're a regular angle expert, right?

00:30

But…uh-oh.

00:31

What's that?

00:32

There, lurking in that dark corner… [Torch light searching around a dark room]

00:34

….there are other angles living among us…

00:36

…and they really could use a light bulb, or a candle or something…seriously, why [Other angles hiding in the dark room]

00:41

are they sitting in the dark?

00:43

Anyway.

00:44

Take this angle.

00:45

Sure, it looks like a straight line, but it’s actually an angle in disguise. [Straight line with eyes]

00:48

Yep – a straight line has an angle measurement, too.

00:51

Check it out.

00:52

It measures exactly 180-degrees. [Protractor on the line]

00:54

It’s twice the size of a right angle…

00:57

...and we call this one a “straight angle.”

00:59

But wait, there’s more!

01:01

Man, this is like Christmas came early…except instead of leaving decent stuff, Santa left….math. [Coop pointing at a blackboard]

01:05

…What, was he out of coal….? [Boy looks excited by presents under the tree then realises they're all math books]

01:08

So this circle’s got an angle measurement, too.

01:11

It’s called a “full angle”. [Cirlce with eyes]

01:12

It’s twice the size of a straight angle and

01:14

measures 360-degrees. [Dino pointing at a blackboard]

01:17

And what about the angles that are more than 180-degrees but less than 360-degrees?

01:21

Math’s not gonna let them fall through the cracks. [Angle falls down then comes back up]

01:24

We call those “reflex angles.”

01:26

And they're the real winners here, because they get the coolest name of the bunch.

01:30

So now you know.

01:31

Angles are everywhere, hiding in plain sight… [The light shines on the angles in the dark room]

01:34

…Seriously, can someone get these things a lamp?