VR Evolution of Oxygen in Photosynthesis
Overview
This VR experience recreates the classic photosynthesis experiment where aquatic plants release oxygen bubbles during photosynthesis. Inside a highly interactive virtual lab, learners assemble the apparatus, control environmental variables, and measure oxygen evolution in real time-all through the VR headset.
Learning Objectives
- Understand how photosynthesis produces oxygen as a by-product.
- Observe oxygen bubbles emerging from the cut stem of an aquatic plant.
- Investigate how light intensity, CO levels, temperature, and light color affect photosynthesis rate.
- Perform Willmott's Bubbler experiment step-by-step in VR.
- Record and analyze data to calculate photosynthesis rate using bubble counts.
Key Benefits
- Real-time visualization of an invisible biological process.
- Fully safe and repeatable-no fragile glassware or live plants needed.
- Instant feedback enhances understanding of photosynthesis factors.
- Ideal for demonstrating experimental design, controls, and variable manipulation.
- Increases learning retention through immersive interaction.
1. Virtual Lab Setup
A fully equipped virtual station with Elodea/Hydrilla sprig, test/boiling tubes, beaker with water, sodium bicarbonate CO source, adjustable light, stopwatch, ruler, filters, and digital controls.
2. Preparing the Photosynthesis Setup
Dissolve sodium bicarbonate into water, cut and place the Elodea stem upside down inside the test tube, invert it into the beaker, and position the plant with the cut end facing upward.
3. Starting the Experiment - Observing Oxygen Bubbles
Activate the light source to see oxygen bubbles emerge; a VR counter tracks bubbles per minute while the scene visualizes chloroplast reactions.
4. Manipulating Variables
Change light intensity (move lamp), CO concentration (adjust bicarbonate), water temperature (heat/cool tools), and light color (red/blue/green filters) with instant feedback on bubble rate.
5. Recording & Interpreting Data
Collect bubbles per minute, environmental conditions, and variable changes; analyze to interpret photosynthesis rates.
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