Be a part of our community of 1M+ users who develop and demonstrate their skills on CodeSignal
4 courses
81 practices
6 hours
Build algebraic thinking from the ground up. Learn to read expressions, write equations and inequalities, and model everyday situations like budgets, bills, and schedules with confidence.
You'll build the vocabulary and reading habits that algebraic thinking rests on. You'll learn to spot what varies in a situation, assign variables that actually mean something, read an expression part by part, and tell expressions, equations, and inequalities apart before writing any model yourself.
You’ll turn everyday situations—like shopping, work, and travel—into expressions that represent real relationships. You’ll build expressions step by step, use grouping when needed, and recognize when different expressions represent the same situation.
You’ll translate real-world constraints into math. You’ll represent exact targets with equations, interpret everyday language into inequalities, and model limits and ranges from budgets, rules, and schedules.
You’ll use expressions, equations, and inequalities to understand real situations. By plugging in values, estimating results, and interpreting constraints, you’ll learn how to check whether a model makes sense and explain what it means in everyday terms.
Hear what our customers have to say about CodeSignal Learn
I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!
Francisco Aguilar Meléndez
Data Scientist
+11
I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.
Faith Yim
Software Engineer
+14
It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.
Alex Bush
Full Stack Engineer
+9
I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.
Abbey Helterbran
Tech consultant
+8
I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.
Jonathan Miller
Senior Machine Learning Engineer
+12
I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!
