Okay, so spring is almost over.  Don’t worry.  You can do this activity any time.  Just take pictures of something growing and changing, then have your kids put the pictures in order.  They get to witness the changes in person, then review it with the pictures.  Try taking pictures of flowers, trees, bushes, plants, or grass in your yard.  Or take it inside and plant a seed in a flower pot.  If you want to get all science-y (I’m sure that is a word), take the pictures at the same time each day.  Obviously, I am not a scientist.