Pacific Science Center will expand its Science, Technology, Engineering and Math—Out-of-School Time (STEM-OST) model to new venues in the Puget Sound region to improve science literacy and increase interest in STEM careers for youth. STEM-OST brings hands-on lessons and activities in physics, engineering, astronomy, mathematics, geology, and health to elementary and middle school children in underserved communities throughout the summer months. The center will modify lessons and activities to serve students in grades K-2, align the curriculum with the Next Generation Science Standards, and increase the number of Family Science Days and Family Science Workshops offered to enhance parent involvement in STEM learning. The program will employ a tiered mentoring approach with outreach educators, teens, and education volunteers to increase interest in STEM content and provide direct links between STEM and workforce preparedness.