Slide preparation is
a skill that takes months to perfect.
In this lab we are introducing just 3 techniques in which students
make slides including a dry mount, a wet mount, and live mounts.
They will also look at a permanent mount.
A dry mount will
allow students to observe wetland plants (cattail and tule) so they can
compare the difference. If
these are not available you might look at other plants that might be
available in a pond situation.
We suggest that you cut the plants prior to the lab so the students do not
have to use a razor. However,
if you have a small group you might want them to make their own.
Follow the directions on the worksheet.
You will need a reflecting microscope to observe these types of
A wet mount uses
about 2-3 drops of pond water with a coverslip.
Make sure students put the coverslip as directed on their
A live mount can
either use a demoslide or pre-made plastic cubes that you drill small
wells. These wells act as a
way for the animals to restrict their motion, but allow them to be viewed
in their natural state.