STEM AT ITS BEST! Bring the excitement of hands-on learning to your next simple machines unit. As part of a series, the K’NEX Education Intro to Simple Machines: Wheels & Axles and Inclined Planes set is designed to introduce students to the scientific concepts associated with two types of Simple Machines – wheels and axles, and inclined planes. Students build, investigate, and evaluate scientific principles in action. The Teacher’s Guide, used in conjunction with the K’NEX materials and individual Student Journals, provides the information and resources needed to build students’ understanding of scientific concepts and channel their inquiries into active and meaningful learning experiences.