Perform. Measure. Analyse. Understand.
Virtual practicals where the data is genuinely yours. Set up the apparatus, take readings with real uncertainty, plot your own graph, and get examiner-style feedback on every practical skill.
No card needed. Full report at the end.
Real practical skills, not animations to watch
Set up and measure
Choose ranges, control variables and read instruments. Poor technique gives poorer data, just like in the lab.
Record and process
Repeats, means and half-range uncertainties build up in your own data table.
Graph and uncertainty
Plot error bars, place your best-fit line, and find gradients with steepest and shallowest lines.
Instant feedback
Submit and see exactly which skills are strong, which need work, and what to do next.
Eighty practicals across four subjects
Every lab is tagged by level. Labs marked HL cover higher-level-only content; all others suit both SL and HL students. In the library, students can filter to show only their course. Labs marked Free are open to everyone; the other 76 unlock with a subscription.
Physics 22 labs
- Simple pendulum: determine g Free
- Hooke's law and the spring constant
- Newton's second law with a dynamics trolley
- Projectile motion: determine g from range
- Resistivity of a constantan wire
- EMF and internal resistance of a cell
- Wavelength of laser light with a double slit
- Specific heat capacity of aluminium
- Boyle's law: pressure and volume of a gas
- Standing waves on a stretched string
- Refractive index of a glass block
- Half-life of protactinium-234
- Capacitor discharge and time constant (HL) HL
- Force on a current-carrying wire
- Induced emf in a rotating coil HL
- Efficiency of an electric motor
- Rolling objects and moment of inertia HL
- Speed of sound with a resonance tube
- Inverse-square law for light intensity
- Photoelectric effect: Planck's constant HL
- Kepler's third law from planetary data
- Black-body radiation and Wien's law
Chemistry 22 labs
- Acid–base titration Free
- Rate of reaction: thiosulfate and acid
- Enthalpy of neutralisation by thermometric titration
- Equilibrium constant for iron(III) thiocyanate
- Voltaic cells and standard electrode potentials
- Colorimetry: calibration curve for copper(II) ions
- pH curve for a weak acid (HL) HL
- How a buffer resists pH change HL
- Molar volume of hydrogen from magnesium
- Order of reaction with an iodine clock (HL) HL
- Enthalpy of combustion of alcohols
- Rate of reaction by gas collection
- Electrolysis: determining the Faraday constant HL
- Paper chromatography of food dyes
- Identifying organic functional groups
- Hess's law: enthalpy of hydration of copper(II) sulfate
- Activation energy from the Arrhenius equation HL
- Limiting reactant and percentage yield
- Empirical formula of magnesium oxide
- Identifying compounds from IR spectra
- Boiling points and intermolecular forces
- Redox titration: iron in iron tablets
Biology 22 labs
- Effect of temperature on catalase activity Free
- Osmosis in potato tissue
- Effect of light intensity on photosynthesis
- Respiration rate of germinating peas
- Microscopy: measuring cells with a calibrated eyepiece
- Ecology: moss cover along a transect
- Transpiration rate with a potometer
- Beetroot membranes and temperature
- Heart rate and exercise intensity
- Bacterial population growth
- Monohybrid cross and chi-squared test
- Estimating population size: mark–release–recapture
- Chromatography of photosynthetic pigments
- Stomatal density of a leaf
- Effect of temperature on seed germination
- Mitotic index in an onion root tip
- Gel electrophoresis: sizing DNA fragments
- Vital capacity and body height
- Reaction time and practice
- Natural selection in peppered moths (model)
- Antibiotic concentration and zones of inhibition
- Effect of pH on amylase activity
Environmental systems and societies 14 labs
- Simpson's diversity index of a meadow Free
- Soil organic matter with depth
- Dissolved oxygen downstream of a sewage outflow
- Primary productivity: light and dark bottles
- Succession on a sand-dune transect
- Lichens as indicators of air quality
- Modelling the greenhouse effect
- Ocean acidification: CO₂ and seawater pH
- Solar panel output and tilt angle
- Maximum sustainable yield of a fishery (model)
- Urban heat island transect
- Soil infiltration and land use
- Nitrate and algal growth (eutrophication)
- Demographic transition: birth and death rate data
"17/25" tells you nothing. This does.
Every submission is broken down into the skills examiners look for, with evidence from your own data and a recommended next step. The report even reveals what the apparatus was really doing.
From first attempt to exam-ready
Learn
Hints, formulas and warnings about common mistakes as you work.Practice
You make the decisions. A few hints when you're stuck.Exam
No guidance. Full feedback after you submit.One licence for your whole science department
A school licence covers all four subjects (Physics, Chemistry, Biology and ESS) for your students, with unlimited teacher access. Students get their own datasets and instant reports; teachers can review every report. Teachers: try every lab free before you ask for budget.
| Tier | Students | Price per year | Per student |
|---|---|---|---|
| Tutor / Small group | up to 10 | £149 | £14.90 |
| Starter | 25 | £349 | £13.96 |
| Department | 50 | £599 | £11.98 |
| School | 100 | £999 | £9.99 |
| Whole School | 200 | £1,799 | £9.00 |
| Enterprise | 200+ | Quote | from £8 |
School prices exclude VAT. Founding schools: 25% off your first year.
Simple annual plans in GBP
One Science
Physics, Chemistry, Biology or ESS. Every lab in that subject, SL and HL, all three modes, instant reports.
Choose a subjectAll Sciences
Physics, Chemistry, Biology and ESS: all 80 labs, plus every new lab as it's released.
Get all subjectsFree demo
Four complete labs, one per subject (pendulum, titration, catalase and Simpson's diversity), each with a complete report. No card, no account.
Start the free labsStudent prices include UK VAT.