reflex arc working model science project for exhibition – biology project – diy | howtofunda

Creating a reflex arc working model for a science project exhibition can be both educational and interactive.

Here’s how you can make one using cardboard to create a human body with a hand, colored paper for fire, and simulated alarm and light in the brain area:

Materials Needed:

  1. Cardboard
  2. Colored paper (red, yellow, orange for fire)
  3. LEDs or small lights
  4. Buzzer or alarm module
  5. Wires
  6. Battery or power source
  7. Switch or sensor (for hand-touch activation)
  8. Hot glue gun or adhesive
  9. Markers or paints for decoration
  10. Scissors
  11. Optional: additional decorative materials (e.g., cotton for clouds)

Step by Step Instructions:

reflex arc working model science project for exhibition – biology project
  1. Create the Human Body Model:
    • Cut out a large piece of cardboard to represent the human body.
    • Draw and cut out the shape of a hand on one end of the cardboard body.
  2. Make the Fire:
    • Cut out flame shapes from colored paper (red, yellow, and orange).
    • Arrange the flame shapes on another piece of cardboard to represent fire. This will be placed near the hand later.
  3. Construct the Brain Area:
    • Cut out a cardboard shape to represent the brain area. This can be a simplified version of the brain’s structure.
    • Attach LEDs or small lights inside the brain area to simulate brain activity. These lights will be activated when the reflex arc is triggered.
  4. Add the Alarm System:
    • Attach a buzzer or alarm module to the brain area using adhesive.
    • Connect the buzzer to a power source and a switch or sensor. This switch or sensor will be activated when the reflex arc is triggered by the hand touching the fire.
  5. Assemble the Model:
    • Arrange the cardboard body, fire, and brain area on a stable base or platform.
    • Place the fire near the hand of the cardboard body.
    • Position the brain area above the body, near the head region.
  6. Connect the Components:
    • Connect the LEDs or lights in the brain area to the power source.
    • Connect the buzzer or alarm module to the power source and the switch or sensor.
  7. Test the Model:
    • Ensure that all components are properly connected and secured.
    • Activate the switch or sensor by touching the hand to the fire.
    • Observe the lights in the brain area lighting up and the buzzer or alarm sounding off, simulating the reflex arc response

By following these steps, you can create a working model of a reflex arc for your science project exhibition. This model demonstrates the basic concept of reflex actions in the human body in response to stimuli.

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