At primary school, we frequently did experiments in practical science: lots of people my age say they never did. Some memorable ones were a teacher bringing in a real ox's heart, which she dissected with a sharp knife, and lambs' lungs; she told us the butcher suggested that we children might like to blow them up. None of the children were brave enough, so she did it herself.
I was in the headmistress's reading group in year 2, and she used to rant furiously about the books we had to read from, in that the stories were always about boys out having a good time with their father, while the girls were at home helping Mother. This annoyed her so much, that she used to make us swap the names when we read them (which would be names such as Peter, Mary, Joan, Simon, etc.) Mumsnet would have been proud!
Another teacher gave us a great lesson in compass bearings (something I find many secondary school pupils simply can't grasp), and directional hearing. The playground had a compass painted on the ground, so we all went outside, and bearings were written on the ground in chalk: 000 for north, 045 for north east, and so on. In turn, we stood in the middle of the compass, facing north, before being blindfolded. Another child would stand on a bearing, and clap. The child in the middle would say the bearing where they thought the person clapping was. The harder game was to start facing a bearing other than 000, or to be spun round first and have to work out which way you were facing from what you could hear. It became a playground game.
We also had a memorable theatre trip, in 1990, to see a play called "the secret of Theodore Brown", which was probably specially written for school groups. It was about a black Catholic family in south London, and the play began with the sounds of a motorbike hit and run, with the stage in darkness apart from a scary-looking motorbike. Later, while his mum was church cleaning, 11-year-old Theodore was bored and messing about in the church; he hid in the priest's side of a confession box, and while he was there, someone thought he was the priest, and made a confession, from which Theodore learned some vital information about the hit and run (in which a child was seriously injured). But he couldn't tell anybody, because his mum had always emphasised "what's said in there is between the sinner, and God", so most of the play was about his tremendous dilemma. Later we spent a lot of time talking about this play, and analysing it. I recently got a copy of the script, and thought this was a pretty big play for us at the age of 9; it was funny and serious in equal measure, with lines such as "People are in this church praying for the little girl, and then you come bursting in like the Devil himself! Now go and apologise to God."
(teenager awkwardly kneels at altar) "...Sorry, God".