Follow Drop, the water droplet as she maneuvers through the water cycle in the book, Drop: An Adventure Through the Water Cycle by Emily Kate Moon. All life depends upon drops of water. Plant a bean seed in a toilet paper tube. Take it back to school and watch it grow! Or for older students, make a water gauge out of recycled water bottles. Put it outside and track the amount of rain that falls during a week or month. What did you learn? Chart the data. (This can be paired with Weather Forecasting if you bring two classes.)