Circuit detective: predict the readings, then switch on sim
Work through 24 real peg-board circuits: predict every meter and lamp before one announced change, lock your predictions, then make the change by hand (close a switch, add a lamp, cover the LDR, warm the thermistor, slide the rheostat, unscrew a bulb, short a lamp) and get a step-by-step reason for every wrong prediction; teachers can build new puzzles.
D.C. circuits: series, parallel, sensors and potential dividers · covers the O-Level, IGCSE, GCSE topic
What the sim shows
A peg board of real school circuit carriers: the battery, lamps, resistors, switches, digital meters, an LDR, a thermistor, a rheostat and a potentiometer clip between brass pegs, so the board is laid out like the diagram. Predict every reading, lock your predictions, then make the one change by hand. Every reading comes from the shared circuit model solving the board as it is; marks compare your predictions with its readings before and after. Values are illustrative.
- The part you move to make the change
- Peg board with circuit carriers, two water baths, parts tray
Use it in your lessons
- Try it here: anyone can unlock 2 figures free, and a free account unlocks up to 5. Runs on a laptop, a Chromebook or a phone; nothing to install.
- Present it and share student links with the teacher plan, from US$5 a month, billed yearly.
- Put it on your own website or LMS for US$9, paid once, or every sim from US$29 a month.
Free guide: 12 practicals as sims, and how to run one in a lesson →
Need a version for your exact set-up? Have one made: US$49 a figure in an order of 5.
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