1. Cut one green and one blue paper plate from edge to center, and fit together, to show students how to assemble these pie graphs (optional).

2. Label one 2-L bottle ‘Oceans’ on two opposite sides, and label the five cups: Icecaps & Glaciers, Lakes, Rivers, Atmosphere, Groundwater. Repeat for each set of cups and 2-L bottles, or have students label them. Save the labeled cups for future repetitions of the activity. Fill the 2-L bottle with blue water for the teacher demonstration. Fill one 2-L bottle with water per student group.

3. Inflate 1-2 globes, depending upon the size of the class.

4. Prepare a cup of salt water for one student to taste.

5. Set out three 100-ml graduated cylinders. Place a label next to each one: ocean, lake, and snow/ice. Fill a container with enough water for 10 ml per student. Post the question: Where would you most like to take a family vacation?