(1) Pyrotechnics
(What is pyrotechnics? – What is the root word and its meaning? – What does pyrotechnics include ? – Why is the household match a special pyrotechnic device? – Who are the pioneers of pyrotechnics? - What is the greatest danger of pyrotechnics?)
OR
(2) Black Powder
(black powder or gun powder – basic material used in fireworks – was invented in India - Shukranti - more than two thousand years ago – Chinese developed black powder more than one thousand years ago -in 1242, an English monk, Roger Bacon, revealed the formula for black powder – written in code language - the basic formula of the black powder or gun powder' – ratio – remained unchanged for centuries)
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