Can celery absorb colored water? It may sound like a silly question, but it’s exactly those types of basic scientific questions — and the hands-on experiments that teachers and students use to answer them — that can excite the youngest minds about science. It was also just one of many such questions posed — and answered — at the fifth annual Super Saturday! Science, Technology, Engineering and Math Expo that on May 17 turned the Harlem Armory into a veritable science lab. Hundreds of science-minded students, teachers, parents and administrators from approximately 30 schools in Manhattan’s District 5 attended the afternoon expo, which featured student projects and experiments on everything from battery life to coding to the impact of drugs on the human body to, of course, celery. UFT District 5 Representative Dwayne Clark, a science enthusiast himself, said that the event, which is open to the public, offers teachers and students a chance to show off the STEM work they’re doing in their schools and to learn from their colleagues and peers. “It’s a wonderful experience for the children in the district and for the community,” Clark said. “It displays the best practices we’re using in schools to ensure that District 5 students are receiving the quality education they deserve.” Besides the projects, the event also featured a robotics competition for middle and high school students, a chess tournament and a math competition. Following on the success of the expo, District 5 is hosting its first districtwide spelling bee on June 4 and 6 at Riverbank State Park.