Conor Radwanski carries a model of a World War II vintage fighter airplane through the crowd at the Science Expo. | Jon Langham~for Sun-Times Media

Kelly Vaiciulis (middle) helps her daughter Katie with her experiment Geysers Gone Wild as they measure the height of geysers produced with Mello candies inside different bottles of soft drinks. | Jon Langham~for Sun-Times Media

The gymnasium was a beehive of activity as all grade levels participated in the Science Expo. | Jon Langham~for Sun-Times Media

Sixth-grade students Brianna Stirrat, Kaitlyn Pomeroy and Kirby Dorner try to hold down the carbon dioxide bubbles that their dry ice experiment produces with dish soap in water. | Jon Langham~for Sun-Times Media

Fifth-graders Reagan Radwanski and Josie Kelpsas demonstrate their toroidal vortex experiment with puffs of smoke shooting out of an opening in a circular shape. Forest Road School hosted a science fair Saturday. | Jon Langham~for Sun-Times Media

Fifth-graders Reagan Radwanski and Josie Kelpsas demonstrate their toroidal vortex experiment with puffs of smoke shooting out of an opening in a circular shape. | Jon Langham~for Sun-Times Media