Crash Course Kids: A Case of "What-Ifs" - Episode 9.1
Crash Course Kids

In this episode of Crash Course Kids, Sabrina chats to us about how variables affect our choices as engineers.

Crash Course Kids: Bowled Over - Isolating Variables - Episode 39.1
Crash Course Kids

In this episode of Crash Course Kids, Sabrina shows us how to isolate variables at the bowling alley!

Crash Course Kids: Engineering Games - Episode 29.2
Crash Course Kids

So how can a game teach us about engineering? Pretty easily!

Crash Course Kids: Testing and Trials - Episode 44.2
Crash Course Kids

More trials! This time we need to figure out what to do if you don’t have all the things you’d like to have to perform your tests.

Crash Course Kids: Let's Build a City - Episode 48.1
Crash Course Kids

In this episode, Sabrina shows us what we need to think about when we start engineering something as huge and full of problems as a city!

Mathalicious: My Fellow Americans

In this lesson, students evaluate expressions with variables to compare the reading levels of famous speeches in American history and debate the virtues of complexity vs. popularity.

youcubed: Mathematical Mindset Algebra
youcubed (Stanford University)

This 4-week curriculum unit we have developed is one that can be used to introduce algebraic concepts at any grade level.

Real World Math: Project Based Learning - Search and Rescue Project
Real World Math

This lesson simulates a Search And Rescue (SAR) operation at sea in which the students are members of the Coast Guard. 

Illuminations: Inclined Plane
Illuminations (National Council of Teachers of Mathematics)

Students time balls rolling down inclines of varying lengths and heights, then try to make inferences about the relationship among the variables involved.

Illuminations: The Variable Machine
Illuminations (National Council of Teachers of Mathematics)

This lesson provides an introduction to the use of variables, and develops students’ algebraic thinking.

Illuminations: Balancing Act
Illuminations (National Council of Teachers of Mathematics)

Problems such as those in this activity help develop what students already know in preparation for writing equations and learning ways to solve for variables.