Whenever we can, we make our science topical asit helps engage children and helps them access the science that is happening all around them.
One of my all time favourites as I remember them from childhood is Indoor Fireworks. They are a great tool to support the Year 5 Objective which talks about Irreversible Changes through Burning. This also provides an opportunity to practise the Working Scientifically skill of Observation over Time.
Grab your self a packet of indoor fireworks (making sure you do a risk assessment!). Give each table a firework to look at. Ask them to predict with a drawing what the firework will look like after it has been burned and whether this will be a reversible or irreversible reaction. Then carefully making sure the children are not close to the firework, light it and get them to observe what happens. Were their predictions correct?