1. Choose the right profile
Use Student for the real learner and Tester for experiments. Each profile has separate saved mastery and practice history.
2. Pick a knowledge point
Use Knowledge Points on the left to practise the full Precipitation Reactions module or one focused sub-skill.
3. Learn, answer, and submit
Read the concept and example, answer the current question, then submit for grading. Typed answers and photo uploads are both supported.
4. Follow the mastery lights
Green means mastered, yellow means practising, and red means the skill needs more work. The next question is chosen from weak areas.
5. Keep versions fresh
If a new version is available, an update banner appears. Click Update to reload the newest app without changing saved learner progress.