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.
ScienceNews article highlighting the work of Polar Gigantism in Antarctica expedition Principal Investigator Dr. H. Arthur Woods on sea spider physiology.
PolarTREC teacher Alicia Gillean shares her impressions of the Arctic tundra and details about her expedition to Toolik Lake, Alaska to study arctic ground squirrels.
Article in the Oklahoma Jenks District Gazette about PolarTREC participant Alicia Gillean's experiences and arctic impressions following her expedition to study ground squirrels at Toolik Lake, Alaska.