You will need: A pen with a clean tip,
paper, candle, and vinegar or
Invisible ink which becomes legible when exposed to heat
really employs an oxidization process. For your ink you will need either
vinegar or the juice of a lemon.
Use a new tip in your pen or else thoroughly clean the
old tip so that no trace of any previous ink remains. Even a sharpened
matchstick can be used to write with.
a little vinegar or lemon juice into an egg-cup. Write your message in large
letters on a sheet of drawing paper. When the 'ink' has had time to dry the
message will be invisible.
make the message reappear, hold the paper close to the flame of a candle or
facing a fire, and the writing will gradually appear. This is because the
portion of the paper which absorbed the vinegar or lemon juice combines with
oxygen from the air more easily than the untreated area of the paper, and the
writing will show up as a faint brown scorching.
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!