| Week 1 - Introduction to flight.-- The history of flight.
 ----Montgolfier Brothers (density of hot air as compared to cold air)
 ----Wright Brothers (their significance in the world of aviation)
 ----Giant air ships and the Hindenburg disaster (hydrogen gas and its 
        properties)
 Activity -
 -- Appropriate video can be shown of giant airships or the Hindenburg.
 -- Building hot air balloons.
 -- Research the advances in flight during World War I and II. (from the 
        biplane to the V2)
 
 Practical -
 -- Density
 -- Build a density toy - buoyancy  -- cartesian diver -- activityWorksheets / Home Work-
 --History of flight.
 --The 
        Science Behind the History of Flight
 The introduction and practicals (if the teacher wishes to conduct 
        them) can be done over two lessons. One lesson spent on the introduction 
        and the next on the practical
 Concepts to be learned - -- The relationship between the force of buoyancy and hot air balloons.
 -- Density and its impact on buoyancy
 -- Scientific advances and progress over the ages that have resulted in 
        improved flight.
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