At primary school, testing our directional hearing, by being blindfolded and pointing at somebody clapping, then doing the same again with one ear covered. Is this still done?
The police coming in to talk about their work, demonstrating handcuffs and fingerprints, and using a police dog to catch a burglar.
@OllyBJolly I remember Flavia and Cornelia in Ecce Romani, and the rebellious Sextus. Those stories really made it interesting!
In GCSE physics, an experiment to calculate the speed of a bullet, fired from an actual air rifle, in about 1995. Yes, really! Certain precautions were taken: the rifle was attached to a very large wooden base, and lots of safety screens were put around it while the experiment was done. I can't imagine this experiment being done now; although, the school did have a cadet force and did things like stripping guns, so I imagine there was some gun safety.
@EstoyRobandoSuCasa Yes, primary schools still do topic work. The one I volunteered in gets the children to research using ipads in the classroom, and once a term, they do individual presentations, often with a model, or a video (usually with a lot of parental help).