Cameron Knapp, 7, of Charleston rides a hovercraft made from plywood and a shop vacuum as Marshall University College of Information Technology and Engineering student Nathan O'Kane controls the power. The college students and area children gathered at the Clay Center in Charleston Saturday for the annual Discover Engineering family fun day.

Will Bracken, 10, of Charleston holds a ball of fire in his hand made from a soap solution that was lit by West Virginia University Tech chemistry professor Hasan El-Rifai during a demonstration Saturday. Emily Fowler, 10, of Davisville and Melissa Northey of Bridgeport watch in amazement from the other side.

Ellie Lepp, 9 and Hope Sizemore 7, both of South Charleston, make bouncy balls from glue, cornstarch, borax and food coloring with the help of people from Dow Chemical Co. as Ellie's mother, Paula Lepp, looks on.