Linear form

How can we measure anything without numbers?

Imagine you're at a bakery, and you want to buy a dozen cupcakes. The bakery doesn't just hand you a dozen without any calculation. You need to know the price per cupcake to figure out the total cost.

Think of the price per cupcake as a rule that tells you how much money you need to spend for each cupcake. This rule is like a math function that helps you calculate the total cost based on the number of cupcakes you want to buy.

Example

If the rule says each cupcake costs 2, and you want 12 cupcakes, you multiply 12 by 2 to get $24.

Remember this

The rule for calculating total cost from the number of cupcakes is like a function, helping you figure out what you need to spend.

Text adapted from Wikipedia, licensed under CC BY-SA 4.0.

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