Interactive lessons
Learn a topic by answering as you go
Short lessons that explain one idea at a time and check you have it before moving on.
Start a lessonSmall steps
Each step explains one idea, then checks it with a quick question.
Step 3 of 6
Supply rises and demand stays the same. What happens to price?
- It rises
- It falls
- No change
Fits a short session
Stop whenever you need to and pick up from the same step later.
Why enzymes denature
High temperatures break the bonds holding an enzyme in shape. Its active site changes shape, so the substrate no longer fits.
Common mistake: enzymes are not killed, because they were never alive.
Know when you are ready
Finish a lesson with a short quiz that shows whether the topic has stuck.
Your progress
Time studied this week: 6 h 40 min
Accuracy by topic
- Cell biology82%
- Genetics64%
- Ecology48%
Topics covered
11 of 18 topics revised
Example only.
Active, not passive
You answer something every minute or two, which is how ideas stay.
Feedback on every answer
Wrong answers get a short explanation, not just a red cross.
Follows the syllabus
Lessons are ordered like your course, from the first topic to the last.
- per step
- One idea
- every minute or two
- Checks
- from where you stopped
- Resume
Start studying in a couple of minutes
A free account saves your progress, remembers what you have covered and picks up where you left off on any device.
Start a lessonExplore related features
One connected toolkit for learning, practice and coursework.
Frequently asked questions
Is this included in the free plan?
The free plan includes a sample. Paid plans include full access.
Still have a question?
The help centre covers plans, billing, marking and troubleshooting, and you can message us from there.
Visit the help centre