Growing plants in the classroom always provides opportunities to teach science. Once your potted seeds start to grow and have leaves, you can perform this easy science experiment to illustrate that plants move just like people and animals.
In the morning turn all the pots, so the leaves are facing the inside of the classroom, away from the sunlight.
At the end of the day, have your students, check to see if the leaves moved. They will probably be facing the windows and the sunshine.