For teachers and club leaders
Teacher pack
Everything here is free, needs no accounts, and collects nothing about your students. Use the suggested plan, print lab sheets for hands-on practicals, hand out worksheet codes, and see a class progress summary from codes your students give you.
A ten-session plan
About an hour each, for learners starting from zero. Each session pairs something to learn with something to do; adapt it freely.
Printable lab sheets
Each sheet is a real practical: aim, parts, safety, a prediction to make first, steps, a results table and questions. Teacher notes give the expected results, worked out from the same models as the site; real parts vary, so treat them as guides.
Worksheets and drills
The worksheet maker gives every sheet a code: the same code always produces the same questions, so you can write the code on the board and print the answer key yourself. Speed drills make good five-minute starters.
Class progress
Ask students to copy their progress code from My progress (My progress → Your progress code → Copy code) and send it to you. Paste the codes below, one per line; you can put a name first, like Asha: EFZ1.…. The codes are decoded in this browser only: nothing is uploaded or saved.
Lessons, by how many students marked them understood
Progress is self-reported: students mark lessons as understood themselves, and quiz scores are their best attempts in their own browser. Use it to start conversations, not as an assessment.
In the classroom
- No sign-up. Each student’s progress stays in their own browser. Shared computers share progress; ask students to save a progress code before they leave.
- Offline. Once a page has been opened, the site works without internet and can be installed as an app.
- Hardware lab needs Chrome or Edge on a computer. The simulated board works everywhere, for demonstrations.
- No AI help is built in: learners work things out themselves.
- Safety. Keep to 9 V batteries or USB 5 V. Lithium cells and mains are out of scope for these practicals.
- Accessibility. Every interactive bench works with the keyboard, the breadboard and sandbox have form-based editors, and timed drills have an untimed mode.
- Models. Simulations are simplified teaching models. Discuss why real readings differ: tolerance, battery wear, meter loading.
- Certificates are progress records printed from the learner’s own data, not qualifications.