Ingredients
- Cardboard (1)
- Scissors (1)
- Straws (several, cut into shorter sections)
- String (several)
- Tape (1 roll)
- Markers (several)
Instructions
- Cut out the hand shape.
- Draw the outline of a hand on cardboard, including the palm and five fingers. Cut carefully around the outline. Keep the fingers long enough to bend slightly without tearing.
- Create the straw mechanism. Cut the straws into shorter sections. Arrange them along the fingers to act as channels for the string. Leave enough flexibility between the sections so the cardboard fingers can move.
- Attach the strings. Thread or position one string along each finger. Each string should run from the fingertip area toward the palm, allowing it to pull the finger downward when tension is applied.
- Secure the moving parts. Use tape to fasten the straw sections and strings to the cardboard. Do not tape the fingers so tightly that they cannot bend. Test each finger as you work and reposition the straws if the string catches.
- Test the hand movement. Pull each string gently and check whether its corresponding finger moves. If a finger does not bend, look for loose tape, a blocked straw section, or string that is too tight.
- Decorate the robotic hand. Use markers to add robot panels, buttons, wires, labels, or colorful patterns. Allow the design to dry fully if you use any additional wet materials.
Notes
Use sturdy but easy-to-cut cardboard, such as a clean cereal box or lightweight shipping box. Thicker cardboard will make a stronger hand, but it may be harder for children to cut safely. Supervise cutting and assembly.
