Exploring Photosynthesis: How Plants Make Their Own Food

Introduction

Have you ever wondered how plants grow even though they do not eat food like humans and animals? Plants have a special process that allows them to make their own food using sunlight, water, and carbon dioxide. This process is called photosynthesis.

In this WebQuest, you will become young plant scientists. You will explore how plants produce food, why sunlight is important, and how photosynthesis helps humans, animals, and the environment. By the end of this activity, you will understand why plants are essential to life on Earth.

Task

Your task is to create a mini digital poster, infographic, or 5-slide presentation that explains the process of photosynthesis.

Your final output should include the following:

  1. A clear definition of photosynthesis
  2. The materials needed for photosynthesis
  3. The products of photosynthesis
  4. A simple explanation of the photosynthesis equation
  5. The importance of photosynthesis to living things
  6. A labeled diagram showing how photosynthesis happens

You may create your output using PowerPoint, Canva, Google Slides, or a hand-drawn poster.

Process

Follow these steps to complete the WebQuest:

Step 1: Explore the Meaning of Photosynthesis

Read the provided online resources and identify what photosynthesis means. Write a short definition in your own words.

Step 2: Identify What Plants Need

Find out the materials plants need to perform photosynthesis. Focus on sunlight, water, and carbon dioxide.

Step 3: Identify What Plants Produce

Research what plants produce during photosynthesis. Include glucose or sugar and oxygen in your explanation.

Step 4: Study the Photosynthesis Equation

Review the simple photosynthesis equation:

Carbon dioxide + Water + Sunlight → Glucose + Oxygen

Explain this equation in simple words so that your classmates can understand it.

Step 5: Create a Diagram

Draw or design a diagram that shows how sunlight, water, and carbon dioxide enter the plant and how oxygen and glucose are produced.

Step 6: Explain the Importance of Photosynthesis

Write a short explanation of why photosynthesis is important to plants, humans, animals, and the environment.

Step 7: Prepare Your Final Output

Create your final digital poster, infographic, or slide presentation. Make sure your work is clear, organized, creative, and scientifically accurate.

Step 8: Submit Your Work

Present your work to the class or submit it to your teacher.

Evaluation

Your output will be graded using the rubric below.

Criteria Excellent - 4 Good - 3 Fair - 2 Needs Improvement - 1
Content Accuracy All information about photosynthesis is correct and complete. Most information is correct with minor errors. Some information is correct but lacks important details. Information is mostly incorrect or unclear.
Explanation of Process Clearly explains how photosynthesis happens using simple and accurate words. Explains the process with minor gaps. Gives a limited explanation of the process. Does not clearly explain the process.
Diagram or Visual Presentation Diagram is clear, labeled, accurate, and easy to understand. Diagram is mostly clear and labeled. Diagram is incomplete or lacks labels. Diagram is missing or inaccurate.
Creativity and Organization Output is creative, neat, well-organized, and visually appealing. Output is organized and presentable. Output is somewhat organized but needs improvement. Output is messy or difficult to follow.
Importance of Photosynthesis Clearly explains the importance of photosynthesis to plants, animals, humans, and the environment. Explains the importance with adequate details. Gives a simple explanation with limited details. Does not explain the importance clearly.

Total Score: 20 points

Conclusion

Through this WebQuest, you have learned how plants make their own food through photosynthesis. You discovered that plants use sunlight, water, and carbon dioxide to produce glucose and oxygen. You also learned that photosynthesis is important because it provides food for plants and oxygen for humans and animals.

This activity helped you understand that plants are not only important for their beauty, but also for sustaining life on Earth. As a learner, you are encouraged to appreciate and protect plants because they play a major role in maintaining balance in the environment.

Credits

Use the following resources to help you complete the task:

  1. National Geographic Education – Photosynthesis
    https://education.nationalgeographic.org/resource/photosynthesis/
  2. Khan Academy – Intro to Photosynthesis
    https://www.khanacademy.org/science/ap-biology/cellular-energetics/photosynthesis/a/intro-to-photosynthesis
  3. CK-12 – Photosynthesis
    https://flexbooks.ck12.org/cbook/ck-12-middle-school-life-science-2.0/section/2.13/primary/lesson/photosynthesis-ms-ls/
  4. Britannica – Photosynthesis
    https://www.britannica.com/science/photosynthesis
  5. Teacher-provided notes, textbook, or printed learning materials

 

Teacher Page

This WebQuest was created by Zoretch Dher E. Rosales on 20 June 2026 as partial fulfilment of IQRA Development Academy's Teacher Certificate Program