The teaching materials posted here have been developed and tested for use in the SKILLS program and are freely available to K-12 and college instructors. The SKILLS curriculum has been adapted for use in a range of contexts and situations, including a daily 20-week curriculum, a weekly after-school program, and a monthly college preparation program. The curriculum also varies based on the interests, expertise, and goals of individual instructors. We therefore provide each version to allow users to select the version that works best for their needs. In addition, specific units and activities can be adapted for use in stand-alone lessons or in other teaching formats.