class iv activities of unit 4

Students of class iv performed series of activities to learn unit 4 -The way we see things.
Students switch on the torch and observe light and confirm that light  travels from a source  like torch  and help us to see things .
Students further investigate light reflects from the object into our eyes and we see object like coin in the box .
Students smooth polished surface act as mirror and see their image  in shiny foil sheet and clear water . They learn to draw straight beam lines for the beams of light and show direction in which light is travelling with arrows .Students see use of mirror in periscope and kaliedoscope to see beautiful patterns with reflecting mirrors .Students enjoyed all the activities .