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.
Dividing the class into Little auks and predators, students complete survival game for several seasons. After tallying up total volume of food collected, survival rates of the chicks can be graphed and analyzed.
Objective
Students will be able to experience the hazards that Little auks must avoid in order to survive. Students will understand the value of