The 5 TOPS Learning Systems Books on Magnetism, Electricity, Pendulums, Balancing, and Measurement are supplemental textbooks authored by TOPS Learning System and published in 2011. The books cover various subjects in science and math, making them valuable resources for students and educators alike. With a user-friendly format and engaging content, these books provide a comprehensive learning experience for those interested in topics related to magnetism, electricity, and more.