When the kids did a fire project in kindergarden, I reckoned that, as a chemically educated ex-scientist, I should actually contribute something. So I did a magician's show, demonstrating some fireworks chemistry.
Can Iron burn?
Educational objective: Particle size, oxygen supply and inflammability
Relation to fireworks: Sparklers
Observation:
Iron nail: not inflammable
Wire wool: a little inflammable
Iron powder: burns like hell
Intermezzo: Magnesium
Educational objective: Being amazed about the bright white magnesium flame
Colourful Flames
Educational objective: Many salts contain metals and some metals induce flame colouration