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The Great Rift Valley in east Africa is home to many saltwater lakes and also the famously pink Lesser Flamingo. But there is now only one lake, Lake Natron in Tanzania, that is a suitable breeding ground for this species. In this unit, students explore the difficult choices communities face as they decide whether to build a factory at Lake Natron.
This unit explores multicellularity and how a system is greater than the sum of the parts. It begins with a sports team metaphor to kick off this look at cell specialization and at the hierarchical organization of cells into tissues, organs, organ systems, and organisms. Students see the human body as an amazing cooperative community of trillions of cells.
A group of friends look at cells close-up. Students explore the form and function of different kinds of cells through interactive activities and a quick lesson in drawing, which they use to record what they see under a microscope. Finally, they make a written model in a cell analogy project.
From arguing the best recipe for pink lemonade to a dramatic retelling of “The Three Little Pigs,” this unit explore what happens when various substances come together, come apart, or shift around. The comparison of physical and chemical change at the particulate level is emphasized.
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