Moving Around in Class. It's better to
read this material in sequence by following the links, then take the
test. But a site map is provided in case you want to go back to review
sections or "do it your way."
The
Invaders Have a Science!
They
enter through
the outside of your house!
They
enter
from your yard!
They
just stay
inside your house!
Take
the Historic House Quiz
Try to Control the Wet Invaders!
