I cut the top off some plastic 16oz soda bottles. This made a perfect see-thru container so we could catch some root action. I filled some with wet balled-up newspaper and others with wet paper towels (it was a little easier to see what was going on in the bottles with paper towels). Then, we stuck seeds down about an inch along the sides of the container. Since we don't have much direct sunlight in our house, we found a home for them on the back porch (if you have a bright window, that would be a perfect place).
Our seeds started changing after just two days! I seemed just as surprised by the quick turn-around as my kids did.
After a few more days, the roots were growing down and the plant was headed up. Before long, the plants had broken thru the top of the container!
Oh yea, these are great for show and tell, too! My son took his in and was excited to explain to his class what was going on..