<p>Several on my students struggle to calibrate their microscopes. I couldn’t find a set of practice questions for them - they needed to do it several times to master it. Hope it may be useful if someone else finds the same. (I haven’t trialled it yet.)</p>

Not much, just 6 pictures and a key frame I use to with BTEC L2 students to do keys. I do a key with lab glassware and show https://www.youtube.com/watch?v=M51AKJqx-7s and https://www.youtube.com/watch?v=AZoNcmogEug.