I’ve written science-based stories, sketches and poems, for each year group from Reception to Y6 that incorporate themes from the National Curriculum. There are lots of sketches that require the children’s participation which make the presentations even more fun!
The sessions for Reception are usually better if kept to around 40 minutes. For the other sessions I have over an hour’s worth of material for each year group. It’s fine to combine consecutive-aged year groups, such as both KS1 classes or Y3 & Y4.
Many schools ask me to visit when they are having a “Science Week”