🎯 WALT (We Are Learning To)

We are learning to: Investigate and measure the rate of photosynthesis using pond weed

Success Criteria:

I can set up a fair test to measure photosynthesis

I can count oxygen bubbles accurately

I can calculate the rate of photosynthesis

I can explain what affects photosynthesis rate

1. Write your hypothesis (prediction) about what will happen to the rate of photosynthesis when we change the light intensity:

2. What are the three things plants need for photosynthesis?

a) _____________ b) _____________ c) _____________

3. What gas is produced during photosynthesis that we can observe as bubbles?

Carbon dioxide

Oxygen

Nitrogen

Hydrogen

🔬 Experiment Setup & Results

4. Materials needed (tick when collected):

Pond weed (Elodea)

Large beaker or jar

Funnel

Test tube

Lamp or torch

Stopwatch

Ruler

5. Record your bubble count results:

Distance from light: 10cm

Bubbles in 1 minute: _____ bubbles

Distance from light: 20cm

Bubbles in 1 minute: _____ bubbles

Distance from light: 30cm

Bubbles in 1 minute: _____ bubbles

6. Calculate the rate of photosynthesis (bubbles per minute) and circle which distance produced the FASTEST rate:

10cm from light

20cm from light

30cm from light

7. Draw what you observed in the test tube:

📝 Conclusion & Extension

8. Explain why the rate of photosynthesis changed when you moved the light closer or further away:

9. Was your hypothesis correct? Explain:

🌟 Extension Activities (Choose one):

Advanced: Design an experiment to test temperature effects on photosynthesis rate

Creative: Create a poster showing the photosynthesis equation with pictures

Research: Find out why pond weed is good for aquariums

10. Dyslexia-Friendly Option: Instead of writing, draw and label a simple diagram showing what happens during photosynthesis:

Photosynthesis Rate Investigation Worksheet

Photosynthesis Rate Investigation Worksheet

🎯 WALT (We Are Learning To)

Success Criteria:

🔬 Experiment Setup & Results

📝 Conclusion & Extension

🌟 Extension Activities (Choose one):

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