National curriculum · England & Wales
Nothing in science makes sense on its own. So we stacked it.
Every topic from Key Stage 1 to Key Stage 5, written for the student who has to read it. Each page knows what you need to understand it — and offers to check before you start.
How the stages stack
Read from the bottom up. Each stage assumes the ones beneath it — which is why a Key Stage 4 page can quietly fall apart if a Key Stage 3 idea never landed.
Start here
Pick a key stage
Colours stay with you across the site — a green page is always Key Stage 3, wherever you land. Earlier stages have fewer, shorter pages, because that is how the curriculum is taught.
Key Stage 1
Ages 5–7
- Plants
- Animals
- Materials
- Seasons
Key Stage 2
Ages 7–11
- Living things
- States of matter
- Forces
- Earth & space
Key Stage 3
Ages 11–14
- Biology
- Chemistry
- Physics
Key Stage 4
GCSE · ages 14–16
- Biology
- Chemistry
- Physics
- Combined
Key Stage 5
A level · ages 16–18
- Biology
- Chemistry
- Physics
Two ways through every page
Read it, or learn it
Same content, different route in. Students choose at the top of each page.
Read
Straight to the text. For revision, for looking something up, for a teacher pulling a diagram up on the board.
- Open the page
- Read, with play buttons on every section
- Leave whenever you like
Learn
The longer road, and the one that sticks. The page checks the groundwork before it teaches you anything new.
- Quick test on the earlier stages this page assumes
- Feedback on anything you got wrong, with links back
- Then the text, section by section
- A closing test on what you have just read
- Badge earned — the page is marked complete
Built for every reader
Accessibility is in the furniture, not bolted on afterwards.
- Three text sizes, remembered between visits
- High contrast mode
- Play button on every section of text
- Full keyboard navigation and screen reader labels
Your progress
Collect a stage
Every completed page adds to its specialism. Finish all of them and the badge fills in.
Progress is stored in this browser only — nothing is uploaded and no account is needed. Using a school computer? Finish a page in one sitting.