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Stalagmites and Stalactites


Fill two jars with warm water. Add baking soda to each and stir until no more dissolves. Tie weights to the ends of a 12 inch piece of wet string. Place one end of the string with the weight into each jar. Position the jars approximately 6 inches apart and place a small plate underneath the string. Check the jars every day and watch the stalagmites and stalactites grow.

Activity provided by:

Story County Conservation Board
Nature Boxes for Early Childhood Educators
Debbi Williams
56461 180th St.
Ames, IA 50010
Story County Conservation [1]