11-29
HOW TO ‘SHOW PEOPLE THINGS
THAT ARE TOO SMALL TO SEE
One especially difficult idea to
teach is the extreme smallness of
things like bacteria and amebas,
which can only be seen with a
microscope. If a microscope is
available, it helps to have students
use it to look at bacteria, worm
eggs, and amebas, even if they
will not have microscopes in their
villages.
Many people confuse amebas with small worms
because they cannot imagine that amebas are too
small to see.
Here is one way to help students understand how small bacteria, amebas, and
worm eggs are:
1. 2.
3. 4.
5