how can i do an experiment involving plants if it is winter
Use indoor (house) plants.
can you name some indoor plants please
schefflra
rubber plant
African violet
ivy
pothos
philodendron
dieffenbachia
do they all grow fairly qiuckly(so they can be used for experiments)
Philodendron grows most quickly. However, I've never started any of these from seed.
If you need to start plants from seeds, almost any seeds will sprout inside, and grow for a couple of weeks or more.
Try beans.
http://www.ehow.com/how_2108951_science-experiment-child-bean-plants.html