Photosynthesis: How do plants make food?

3rd - 4th

Learners study why plants are green and how water is transported in them. They examine how plants respond to different amounts of light.

Resource Details

Instructional Design
Inquiry-Based Learning

The Three Life-Giving Sisters: Plant Cultivation and Mohican Innovation

Children gain first-hand experience with Native American agriculture while investigating the life cycle of plants with this engaging experiment. Focusing on what the natives called the Three Sisters - corn, beans, and squash - young scientists germinate and grow seeds in order to learn about plant life and understand why the Mohicans chose to grow these plants alongside one another. Use this cross-curricular science and social studies lesson to provide a rich context for studying plant life and its importance to Native American culture.

soil, Water, and Plants

Students examine the relationship between water retention and plant growth by conducting two experiments. They first compare the water retention qualities of clay, sand and loam soil types. Then they use the data from the first experiment to design the second plant growth and soil type experiment.

Rooting Into the Soil: Examining the Relationship Between Plants, Soil, And Water

Students, in groups, conduct an experiment to compare how water moves through different soils. They discuss how different soils could have an impact on different plants.

Plants Alive!  How Plants Grow and Move

Students explore how plants move in response to the environment. In this plant lesson, students engage in three different experiments to investigate how plants grow and move. Resources available in English and French.

Science Activity 1: Light & Sound

Are you looking for lab sheets to go with your class experiment on plant response to light? You are no longer in the dark! This is a lesson that was written for a unit on light, but could easily be used to demonstrate plant behaviors in a life science class as well. Make sure to use quick-to-germinate seeds such as radish if you want the lesson to fit within the five-day period.

What If There's No Light?

students discuss the importance of light and the consequences of living without it. Using a plant as a demonstration, students predict and observe what happens to a plant when it does not receive enough light. In groups, they experiment to discover the impact of a floating plant on dissolved oxygen. After collecting and organizing information, students report their conclusions to the class.

Living Life as a Plant

Students explore plant adaptations to their surroundings. In this plant adaptations instructional activity, students watch an interactive video of plant adaptations as well as videos about a desert biome and carnivorous plants. Students complete a plant adaptation experiment using corn seeds. Students complete a worksheet about 'Living Life as a Plant.'

Why Plants Are Green

Students discover the properties of chlorophyll in plants. In this plant biology lesson, students conduct an experiment to find where the chlorophyll in the plant is located. Students are split into small groups and study plant parts. Additionally, students study what happens to each plant part when sprayed with acetone. In their small groups, students infer what part of the plant contains the chlorophyll based on the reaction with the acetone. Students fill out a result chart.

All About Plants

Young scholars identify plant needs. In this biology lesson, students watch All About Plants and then write a paragraph describing the various details about plants.

Why Are Plants Green?

Young scholars smash plant parts and wait for visibility of chlorophyl to show why plants turn green. In this green plants lesson plan, students use acetone and filter paper for this experiment.

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