Surds

What problem does it solve?

Provides unlimited, on-the-fly practice and automated answer checking for surds so IGCSE students can reliably practice simplifying, adding/subtracting, multiplying, and rationalising square-root expressions without manual grading.

Core Features & Use Cases

• Algorithmic Question Generation: Server-backed generation of randomized problems across four difficulty tiers (easy, medium, hard, extrahard) to create virtually unlimited unique quizzes.
• Answer Parsing & Validation: Normalizes user input (accepts √ or "sqrt"), simplifies radicands to square-free form, and checks answers via a /surds-api/check endpoint.
• Adaptive Mode & Progress Tracking: Optional adaptive scoring adjusts difficulty based on performance with a visual gradient progress bar and a running results table.
• Use Case: Ideal for self-study, classroom practice, or homework assignments where students need instant feedback on surd manipulations.

Quick Start

Open the Surds quiz, choose a difficulty or enable adaptive mode, set the number of questions, and start answering generated surd problems using √ or the "sqrt" shorthand.