The kids loved watching bean seeds sprout. We put five beans in a ziploc bag with a folded wet paper towel. The bags were taped in the classroom window (with names written in permanent marker). Of course we also read "Jack and the Beanstalk
Grade 5 Weather Unit - Creating your own rainstorm. All you need is a clear container, water, shaving cream, food coloring and droppers. Have kids make predictions by drawing what they see and think will happen.