Robotic Hand Science Project | Simple Paper Robot Hand for Kids | STEM Activity

Introduction

In this tutorial, we will create a simple robotic hand using basic materials. This hands-on project is a fun and educational STEM activity for kids that demonstrates how tendons work in the human hand. By following these steps, you'll build a functioning model that mimics the movements of a real hand.

Step 1: Gather Your Materials

Before starting the project, make sure you have all the necessary materials on hand:

• Paper or cardboard
• Pencil
• Thread and needle
• Double-sided tape
• Scissors
• Straws

Step 2: Create the Hand Base

1. Draw the Hand Design

   • Use a pencil to outline the shape of a hand on the paper or cardboard. Ensure it's large enough to fit your fingers comfortably.

2. Cut Out the Hand Shape

   • Carefully cut out the hand shape you drew. This will serve as the base of your robotic hand.

Step 3: Prepare the Fingers

1. Make Finger Sections

   • Cut out five strips of paper or cardboard for the fingers. Each strip should be about the same length and width.

2. Attach Straws to Fingers

   • Cut small sections of straws (about 1-2 inches long). These will act as joints for the fingers.
   • Use double-sided tape to attach a straw piece to the base of each finger strip.

Step 4: Add Tendons

1. Thread the Tendons

   • Cut several lengths of thread. These will serve as the tendons that move the fingers.
   • Thread a needle with one piece of thread.

2. Create Tendon Attachments

   • Insert one end of the thread through the straw attached to the finger. Tie a knot to secure it.
   • Run the other end of the thread through the palm of the hand base and tie it at the base to allow movement.

3. Repeat for All Fingers

   • Repeat this process for each finger, ensuring that the threads are tied securely.

Step 5: Test the Robotic Hand

1. Move the Fingers

   • Gently pull on the threads from the palm of the hand. Each pull should cause the corresponding finger to bend, mimicking the movements of a real hand.

2. Adjust if Necessary

   • If any fingers are not moving correctly, check the thread connections and make adjustments as needed.

Conclusion

Congratulations! You've created a simple robotic hand that demonstrates the principles of how tendons work. This project is not only fun but also an excellent way to explore the concepts of robotics and anatomy. Consider experimenting with different designs or materials for your hand, or try adding more advanced features like finger joints. Happy crafting!