Explanation of the activity:
This demonstration helps to show that our bodies lose water while doing everyday activities and how it is important to drink water to stay hydrated.
Take a 4” x 6” sponge and draw a man on it, like the outline of a gingerbread man. Cut the sponge-man out using scissors. Sit the sponge out for four days before using it in the lesson, so that it is dried out and stiff to begin the lesson.
Note: This demonstration can conclude after several hours or several days, depending on how long it takes the sponge to completely dry out. Therefore, it is important that enough water is added to the sponge so that information can be collected at two time periods. Students should observe Sponge-Bobby in the wet stage and in the dry stage.