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This lesson focuses on the diffusion of gas molecules across the cuticle membrane of sea spider legs and the role body size plays in the ability of sea spiders to uptake gases. Students construct model sea spider legs of varying diameters and use them to investigate the relationship between surface area-to-volume ratios and diffusion.

Overview

Molecules are in constant motion

Overview: Bacteria Modeling

Objectives

Students will understand what bacteria look like with a model they create. They will also learn vocabulary associated with bacteria.

Lesson Preparation

1. KWL of a Microbiologist: knows (K), wants to know (W), and has learned (L)
2. Read book "What are Bacteria, Viruses, and Fungi?" by Tripti Nainwal Pages 2 & 3 3

Overview

Game incorporating polar bear eating habits.

Objectives

Students learn about polar bears.

Lesson Preparation

Have access to either a basketball court or an outdoor area that students can run in.

Procedure

1. Read Book: National Geographic Readers: Polar Bears by Laura Marsh.
2. Choose 2-3 students to be the polar bears and have them stand in the "Ice Cave"

Overview

Students read about polar regions and create models of shelter adaptations for the cold frigid climate.

Objectives

• Students will understand how humans create and survived in shelters in the polar regions.
• Math Link: Students can count how many marshmallows it takes to cover up the entire igloo.

Lesson Preparation

• Read the Book: *Igloos and the Inuit

Overview

Students will be able to understand one of the adaptations of living in cold environments.

Objectives

Describe what blubber is and how it works.

Lesson Preparation

• Partially fill a gallon-sized Ziploc bag with Crisco or shortening.
• Place another gallon-sized Ziploc bag inside.
• Merge the two bags together with duct tape.

Procedure

1. Read the books *Polar

Overview

Students learn about what type of polar animals live in the Arctic.

Objectives

Students understand the relationships between various trophic levels within the Arctic tundra.

Lesson Preparation

Prepare a picture sign for each of the organisms in the food web.

Procedure

1. KWL Chart on Polar Scientist: knows (K), wants to know (W), and has learned (L).
2. Read