This is working model on Photosynthesis, the process by which green plants make their own food using sunlight, water, and carbon dioxide.
As you can see, the LED light represents sunlight, which helps the leaves carry out photosynthesis.
Water is absorbed from the soil through the roots, and carbon dioxide from the air enters the leaves.
Using sunlight, plants convert CO₂ and water into glucose (which gives energy) and release oxygen as a by-product.
This LED working model shows how sunlight is essential, and it lights up to show the process in action.
Photosynthesis is important because it gives us oxygen and is the base of all food chains
Materials Needed:
- Cardboard (for base and background)
- Green paper (for leaves)
- LED light (as sunlight source)
- Wires, 9V battery or power bank
- Small plant cutout or plastic plant
- Cotton (for clouds)
- Blue paper (for sky)
- Brown paper (for soil)
- Color pens for labeling
- Hot glue or tape
Video Steps to Make the Photosynthesis Model:
- Prepare the Base:
- Take a cardboard sheet as your base.
- Cover the lower half with brown paper (soil) and the upper half with blue paper (sky).
- Make the Plant:
- Cut a stem, leaves, and roots using green paper.
- Stick the plant in the center of the base.
- Label: Roots, Stem, Leaves.
- Attach the LED Light:
- Fix the LED above the plant, acting as the sun.
- Connect the LED to a 9V battery or a switch with wires.
- Hide wiring creatively with clouds or sun cutout.
- Add Water Arrows:
- Use blue paper arrows showing water going from soil → roots → leaves.
- Add Carbon Dioxide Arrows:
- Cut arrows labeled “CO₂” coming from air → leaves.
- Show Oxygen and Glucose:
- Arrows from leaves outward: “O₂ (Oxygen)” and “Glucose”.
- Label Entire Process:
- Add a banner: “Photosynthesis”
- Side notes: Sunlight + CO₂ + Water → Glucose + O₂