What are Variables?
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Objective
I can define a variable and explain its purpose in algebra.
Part 1 of 4
Warm-up video
Khan Academy · 3:18Vetted channel
We don't generate video — this one is by Khan Academy on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
A variable is a symbol that represents a value that can change or vary.
- 2
In the example from the video, the amount of tips earned per hour is a variable because it is not fixed.
- 3
Instead of writing out the entire word 'tips', we can use a letter such as 't' or 'x' to represent the variable.
Part 3 of 4
Practice
8 questions
What is a variable in algebra?
Why are variables useful in mathematical expressions?
Part 4 of 4
Exit ticket
Quick comprehension check
“Define what a variable is and explain its purpose in algebra using an example from the video.”
Sample answer included in the free materials
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