K-12 STEM educators can access a number of free classroom resources on this website from Carnegie Mellon University's Leonard Gelfand Center for Service Learning and Outreach. These materials, authored by Carnegie Mellon faculty and staff, are offered across six webpages and cover a variety of topics. For instance, instructors will find an activity on brownfields (land that may contain dangerous contaminants from previous use), a series of "classroom kits" for engaging students with DNA, a number of lesson plans centering on climate, energy, and the environment, hands-on laboratory activities involving polymers, and more. In addition, parents and teachers of all subjects may be interested in checking out Safe-Net, a collection of materials about cyber safety and security. All lessons and activities are described in detail for easy classroom adaptation; many also explicitly align with Pennsylvania Common Core Standards and the Next Generation Science Standards.