Grade levels
 5 - 7
 Contains
 16 pages, digital experiment - streamlined shape
 subjects
 Evolution: Recognizing the body's adaptation to the way of life | Understanding streamlined shape | Formulating hypotheses | Experimenting | Calculating the average | Bionics
 Description
 Here, the students will be given an experiment that will answer the question of why the otter is the "Usain Bolt" of freshwater. Three wooden shapes with different streamlined designs compete against each other by measuring their speed in a Plexiglas tube filled with water. At the end, they will brainstorm which inventions humans have used the animal world as a model for.