Challenge base learning

Bi: Water
EA: What is water?
        Why is it important?
Challenge: Drink 8 cups of water everyday
GQ: What is the advantages and disadvantages of water?
        Where does water originated from?
GA:Research on water...
GR: Internet, Library and NEwater
Bi:Transportation
EA: Why is transportation so important to us?
        Is there any way that we can live without it?
GQ:What is the difference between transportation of the past and of the present?
        Hows has transportation evolve?
GA: Go and find out the history of transportation.
GR:Internet, library and LTA