When you turn on the hot
water in the bathroom, do you ever wonder how the hot water got upstairs when
the source of heat for warming the water is downstairs?
The reason is that hot
water rises -a fact which heating engineers and plumbers make use of. A simple
experiment will provide proof enough.
Fill a milk bottle with
cold water and cover the top with a square of cardboard. Fill a second milk
bottle with hot water to which some ink has been added. Both bottles should be
filled to the brim.
Carefully upturn the bottle
containing the cold water, holding the square of cardboard across the neck as a
simple cork. Position it immediately above the bottle containing the hot water.
Holding both bottles steady, slip the piece of card out from between
them and watch what happens. The colored hot water will rise up into the bottle
containing the cold water, while the cold water will sink into the lower
Children learn best through doing
Before children can
understand a thing, they need experience: seeing, touching, hearing, tasting,
smelling; choosing, arranging, putting things together, taking things apart.
Experimenting with real things.
Old-time school teaching
used only words and the teachers thought children knew something if they could
repeat it. Now we know better. To reach practical understanding we do not need
to use many words with young children.
clever. They learn a lot, without being taught. The greatest skill - to be able
to talk, to communicate is learnt outside school. In the classroom it's the
children who need to talk the most. Unfortunately it is the teacher who does
most of the talking!