Brilliant: Learn by Doing

Brilliant takes the “just doing” approach to STEM learning. Instead of long video lessons, it uses interactive puzzles, visual explanations, and step-by-step problem-solving exercises to teach math, data, computer science, and foundational AI concepts.

You move through guided paths where each screen is a micro-challenge: adjust a slider, test a hypothesis, manipulate a diagram, or fill in a missing step. If you get stuck, you can reveal hints and full solutions, which makes it feel more like a game than a textbook. The app gradually increases difficulty, so you’re always finding tough challenges without feeling overwhelmed.

Brilliant is especially good if you’re an adult who “wasn’t a math person” in school but now wants to understand statistics, AI basics, or logic for coding and data work. A subscription unlocks the whole library, and there’s a free trial to test if you like the format.