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We observe the surface of real leaves along with microscopic leaf images and a video. We see small openings on the leaf surface and discuss how these could allow plants to “breathe,” by letting gases in and out. Inside the leaves, we see moving green circles inside repeating structures. We gather information from a reading that the repeating structures are plant cells, and the green circles, or chloroplasts, are moving in response to light. We discuss how light and chloroplasts fit in our plant model and review the other inputs and outputs. We discuss how a simulation could help us figure out what exactly is happening inside plant leaves.

Standards:

Warm-Up:

- Circle of Trust- Pick a norm.
- Today's Vocab Escape Room Race Starting Line
- Take 5 Warm- up

To Do List:

Graded Work (Submit work to this form)

7.4 Lesson 5

7.4 Lesson 5 Handout Leaf Observations

Check for Understanding:

Norm Focused Reflection

What students will figure out

Leaves have small openings on the leaf surface that allow gases like carbon dioxide, oxygen, and water to enter and exit the leaf.
Leaves are made of cells.
Plant cells have chloroplasts in them that move in response to light.

Next Lesson We will use a computer simulation to explore how water, carbon dioxide, light, and chloroplasts interact in a plant cell. We will investigate how changing the amount of one of these inputs affects the outputs of the plant cell and use the evidence collected to argue how water, carbon dioxide, light, and chloroplasts interact to produce oxygen and sugar molecules.

Homework:

7.4 End of Unit Exam March 25

Vocabulary Gim Kit