The document discusses building a robotic hand that emulates the human hand. Students first draw and label a diagram of the human hand, then build an articulated finger model using a straw to understand finger bone anatomy and muscle movement. They create a flex sensor from everyday materials and add it to the articulated finger model to create a robotic finger. Students then connect the robotic finger and sensor to an Arduino Uno board to visualize finger flexion and extension data in Excel. Finally, students incorporate what they learned to build a complete robotic hand that can be controlled.