Expansion Core STEM Learning Center in Williston Park offers science, technology, engineering and mathematics programs for students in prekindergarten through eighth grade that emphasize hands-on learning and problem-solving. Older students participate in science investigations, engineering projects, data analysis and technology-based assignments. As students progress, they explore subjects including robotics, coding, mechanical design, structures, environmental science and the engineering design process. Expansion Core offers classes during the school year, summer programs, STEM workshops and competitive opportunities. Participants build and operate robots while explaining their design decisions and demonstrating their understanding of the engineering design process.