Watch your students' eyes light up as they build a working robotic hand—using just straws and string!This NGSS-aligned STEM challenge transforms simple materials into a real-world biomechanics lab, where kids discover how tendons and joints work while mastering the engineering design process! Students Will... Build a working robotic hand using simple materials Explore cause and effect, structure and function, and systems thinking Record observations, test grip strength, and reflect on what