Unplugged Cyber-STEM Pack 2: Kinematics & Arms (Grades 4–8)

Introduce spatial kinematics, mechanical advantage, joint torque calculations, 2D work envelope drafting, pick-and-place state machines, and real-world space robotics with Unplugged Robotics & Cyber-STEM Unit 2: Kinematics & Mechanical Arm Geometry! Designed for grades 4 through 8, this 9-page printable resource is completely unplugged (requiring zero computers, coding software, or digital microcontrollers) and engineered to run seamlessly as a 60- to 75-minute rotation lab, group workshop, or whole-class STEM activity using low-cost supplies like craft sticks, brass fasteners, and paper clips.

What Is Included in This 9-Page Pack?

• Page 1: Teacher Setup & Master Guide

  Contains a complete materials checklist, room setup diagram, craft stick pre-drilling strategies, and timing guidelines for managing 5 rotation stations.

• Page 2: Student Answer Sheet (1-Page Master Handout)

  A single, organized recording sheet for students to clip to a clipboard and carry through every station, maintaining complete individual accountability.

• Page 3: Station 1 Sign — Linkage Arm Build Lab

  Hands-on hardware lab where students construct a 2-degree-of-freedom robotic manipulator using craft sticks and brass brads, testing maximum reach limits and payload capacity.

• Page 4: Station 2 Sign — Torque & Mechanical Advantage Lab

  Applied physics and math station where students calculate joint torque (T = F x D) and determine lever arm mechanical advantage ratios (MA = D_effort / D_load).

• Page 5: Station 3 Sign — Work Envelope Blueprint

  Technical drafting station where students use protractors to map joint rotation constraints (0 to 180 degrees), plot operational workspace reach zones, and evaluate mechanical singularity points.

• Page 6: Station 4 Sign — Pick-and-Place State Machine Algorithm

  Unplugged computer science station where students analyze state transition pathways for an industrial robot arm executing coordinate targeting, gripper actuation, and safety checks.

• Page 7: Station 5 Sign — Real-World Case Study

  Informational reading station exploring the Space Shuttle Canadarm system, analyzing microgravity dynamics, payload momentum, and force-feedback joint control.

• Page 8: Detailed Teacher Answer Key

  Provides fully worked torque and mechanical advantage calculations, reach blueprint criteria, state machine logic keys, and case study reading guidance in plain text.

• Page 9: 10-Point Master Grading Rubric

  A single-page evaluation rubric scoring each station on a clear 0-to-2 point scale for efficient, objective grading.

Standards Alignment & Materials:

• NGSS: MS-ETS1-1, MS-ETS1-2 (Engineering Design & Mechanical Systems)

• CSTA Standards: 2-AP-10 (Unplugged Algorithm Execution & State Machine Logic)

• CCSS Math Practices: MP1 & MP4 (Lever Arm Mathematics, Geometry, & Joint Torque Ratios)

• Materials Needed: Craft sticks or cardboard strips, brass paper fasteners, paper clips, protractors, rulers, and basic calculators.