Raise the electrode labelsPuts the words CATHODE and ANODE on tall signs above the beaker. The plus and minus signs stay on the electrodes either way.
Show electrons in the wiresOn by default. Turn off to leave only the ions moving, which reduces how much is happening on screen at once.
Prediction
Always ask for the predictionOff by default: the products are named for the pupil, and they choose "Predict it myself" if they want to try. Turn on to open the prediction panel automatically.
Procedure
No dragging — buttons onlyEvery drag becomes one button press. Perfect technique assumed.