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Remember pre-school? If not, IT WAS SO MUCH EASIER! But when you were stacking blocks and figuring out which block went into which shaped hole, you were learning about properties. In this episode of Crash Course Kids, Sabrina talks about what properties are and how we can measure them to tell us more about an object.

This first series is based on 5th-grade science. We're super excited and hope you enjoy Crash Course Kids!

///Standards Used in This Video///
5-PS1-3. Make observations and measurements to identify materials based on their properties. [Clarification Statement: Examples of materials to be identified could include baking soda and other powders, metals, minerals, and liquids. Examples of properties could include color, hardness, reflectivity, electrical conductivity, thermal conductivity, response to magnetic forces, and solubility; density is not intended as an identifiable property.] [Assessment Boundary: Assessment does not include density or distinguishing mass and weight.]

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Credits...

Executive Producers: John & Hank Green
Producer & Editor: Nicholas Jenkins
Cinematographer & Director: Michael Aranda
Host: Sabrina Cruz
Script Supervisor: Mickie Halpern
Writer: Jen Szymanski
Consultant: Shelby Alinsky
Script Editor: Blake de Pastino

Thought Cafe Team:
Stephanie Bailis
Cody Brown
Suzanna Brusikiewicz
Jonathan Corbiere
Nick Counter
Kelsey Heinrichs
Jack Kenedy
Corey MacDonald
Tyler Sammy
Nikkie Stinchcombe
James Tuer
(0:10) Hey guys! Remember what it was like in preschool? If you don't remember, here's a reminder. It was way easier. Playing with colored blocks, learning with shapes; Those were the days, good times.

But here's a fun fact: when you were learning how to put all those yellows blocks in a line, or stuffing square shaped blocks through a square hole, you were also learning something very fundamental, and that is how to judge an object's properties.

But what do we mean when we talk about the properties of stuff?
(0:39) Well, lets start with this, The stuff that makes up everything is called matter. Doesn't make any difference if its a tiny grain of sand or all of the air that surrounds the earth, everything is made of matter. And a property of matter is just any characteristic that we can list about it, like how it looks, feels, or acts. For example, my characteristics include having black hair, wearing glasses, having some wicked awesome nerd cred and well, you get the idea.

Properties of matter are also things that we can observe. This means that they have differences that are big enough to notice. For instance I'm currently observing that my desk is messier than it was 5 seconds ago. And to round it out, properties of matter are also able to be measured, that is, we can compare objects to each other. But instead of just looking at them and getting a general idea of how they compare, we measure them by using tools that give us values or numbers.

Now lets put all of these ideas to work by demonstrating how we can find a few basic properties of a simple object. Let me grab my measuring tape.

(1:41) Okay, okay look, I know I was just talking about how fun it was to play with blocks but let me be clear, I am not playing with these blocks. This is science people.

1) What properties does this block have?
well, there are some properties that we can observe but we can't really measure or describe them with numbers, like this block's color of what it's made of or even the fact that it holds its shape which makes it a solid.