A nice activity is to take your students outside and have
them close their eyes and listen to the sounds and
experience the smells of the school neighborhood. Even in
the inner city where I taught this was possible. The
children enjoyed trying to identify the sounds that I
recorded of different birds and other animals, rushing
water, even toilet flushing, etc. Also have them smell
different flowers, etc.
I feel that it is important to have your students
understand the need to be more aware of their environment
and ways that they can help make our world better. Make
them realize the importance of becoming more energy
efficient (adjusting thermostats, using less energy by
turning off devices when they are not needed, using more
energy efficient appliances, etc.). Have them make their
own bags that they can reuse when their families go
shopping.
Tap your local utilities for materials on ways to save
energy. I have written materials for the utility industry
on energy, conservation, ecology, water and the
environment. The utility company distributes these
materials free to schools. In many cases they will
include lesson plans and activities to use with your
students.
On the Environment page on my website I have a lot
of wonderful sites you can get lesson plans and activities
from along with ways to celebrate Earth Day.