The 21st Century After School Program presented an evening of Erupting Volcanoes. All participants were engaged and actively participated with their parents and siblings. The participants learned about the formation of a volcano, why it erupts, and that a volcano is fissure-opening or vent in the earth’s crust through which molten rocks and gases erupt. The molten rocks can be in the form of mixture of hot gases, ash, lava, or other extremely hot substances within the earth’s crust.  Each scholar was provided a package of clay, baking soda, vinegar, and a plastic cup. Scholars followed the instructions on the package to prepare their clay to resemble a volcano. The baking soda and vinegar simulated a real volcanic eruption or as an example of an acid-base reaction. The chemical reaction between baking soda (sodium bicarbonate) and vinegar (acetic acid) produces carbon dioxide gas, which forms bubbles in dishwashing detergent. This caused the volcano to erupt. It was a fun and exciting experience for all, and several wanted to repeat their eruption repeatedly!