Unit 25: Life Cycles and Basic Biology

Day 11 of 30

Photosynthesis basics

3-5Science

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Learning Objective

Students will be able to explore photosynthesis.

Today's Lesson

In this lesson, we'll explore photosynthesis basics. Scientific inquiry allows us to investigate and explain natural phenomena.

Photosynthesis is the process plants use to make their own food using sunlight, water, and carbon dioxide. Inside plant cells, chlorophyll (which makes plants green) captures sunlight. The plant uses this energy to turn water (from roots) and carbon dioxide (from air) into glucose (sugar for food) and oxygen. The equation is: sunlight + water + carbon dioxide → glucose + oxygen. Plants feed themselves and produce the oxygen we breathe—thank you, plants!

As you work through today's material, pay attention to the examples and try to identify the patterns or strategies being used. This will help you apply these concepts to new problems.

Take notes on key points and make connections to what you've already learned in previous lessons.

Key Terms
Photosynthesis

The process of converting light into chemical energy

Investigate

To examine systematically through observation and experiment

Activities
Instructions
1. Read the background information on photosynthesis basics. 2. Form a hypothesis before beginning. 3. Conduct the investigation following procedures. 4. Record observations and analyze results.
Materials Needed
  • Lab notebook
  • Investigation materials
  • Safety equipment if needed
Practice Problems
1

What three things do plants need for photosynthesis?

Hint: Think about sunlight, air, and water.
2

What do plants produce during photosynthesis?

Hint: One is food for the plant, the other is what we breathe.
3

Where in the plant does photosynthesis take place?

Hint: It happens in the green parts.

Teaching Tip

For this age group: Balance direct instruction with collaborative activities. Allow students to explain their thinking and make connections to prior knowledge when exploring photosynthesis basics.

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