Preferred qualifications include: • At least 60 college credits, where required by the applicable assignment or site; • Experience teaching, tutoring, coaching, mentoring, or leading activities with school-age students; • Comfort explaining age-appropriate science concepts through engaging, hands-on instruction; • Strong communication, organization, and classroom facilitation skills; • Availability to provide services for the accepted assignment schedule and communicate schedule issues as soon as reasonably practicable; and. Assignments may include topics such as: • Everyday chemistry using safe household materials; • States of matter and simple chemical reactions; • Kitchen science and food chemistry; • Cleaning science and how soaps and surfactants work; • Simple machines, force, and motion; • Engineering and design challenges using common household materials; • Environmental science, recycling, ecosystems, energy, and sustainability; • Observation, experimentation, measurement, and the scientific method; and.