6th Grade Math Videos & Lessons. Try it free.

An algebraic expression is a number sentence with an unknown number. How to simplify algebraic expressions by combining like terms. And we'll see how this knowledge can help us count savings, order pizza, and even study earthquakes!

We’ll learn that positive numbers are greater than zero and negative numbers are less than zero. That opposite numbers are the same distance from zero, but on opposite sides of a number line. And we'll see that this knowledge can help us understand the weather, pay for things, and explore the globe.

That a ratio describes the relationship between two quantities. How to make equivalent ratios and show them on a graph. That this knowledge can help us learn about pets, volunteer at an animal shelter, and find great deals when shopping.

We’ll learn that the mean is the average value in a data set. That the median is the middle number in an ordered data set. And that the mode is the value that occurs most often.

We'll learn that a unit rate is a special type of ratio that compares the first quantity to one unit of the second quantity. We will also learn how to calculate unit rates with whole numbers, then decimals and finally fractions. And we'll see how this knowledge can help us buy tacos, drive a go-kart, and make dog treats.

We’ll learn how to plot points in all four quadrants of the coordinate plane. We will also learn how to measure the lengths of LINES on the coordinate plane. And we'll see how this knowledge can help us go to an amusement park, plan a trip, and even design a board game!

We'll learn how to find the Greatest Common Factor. We'll also learn how to find the Least Common Multiple. And we'll see how this knowledge can help us plan a barbecue, play sports, and even race cars!

We will learn how to divide using the standard algorithm. We’ll see that we can use the standard algorithm to divide 2, 3 and 4 digit numbers. And we'll see how this knowledge can help us do experiments, bake cookies, and pollinate trees!

We'll learn to find the area of polygons by decomposing shapes. We will also learn how to find the area of polygons displayed on a coordinate plane. And we will see how this knowledge helps people create video games, build houses and even skateboard ramps!

What PROPORTIONAL relationships are. How to identify proportional relationships in data tables, equations AND graphs. That this knowledge can help us bake, play sports, and even learn about animals.