What is Variable?
In code, a named slot that holds a value the program can change as it runs.

same name · 3 → 5
In code, a variable is…
Write it in your own words in the app.
In real work
In the review, rename the vague variable so the agent prompt and the next reader both know what it stores.
In the illustration
The jar keeps its name while its contents change from 3 to 5.
Point to every variable in this function in your coding agent that is set once and never changes, and make each one a constant.
Try it now
The fastest way to learn a word is to use it. Open this line in the agent you already work in and watch what it does. Change the tool to the one you use.
Go further
01Practice
Make it stick
One term a day, a short quiz, and sentence practice that checks your own words.
02Verify
Prove you know it
Pass the quiz and keep it in a Skills Wallet you can share with anyone who needs proof.
03Career
Find the work that uses it
See which roles lean on this vocabulary, and what they pay in year one.





