Our Fourth Graders capstone STEM challenge in the Science Lab this semester centers around forces and simple machines. Students will demonstrate the relationship between the application of a force and the resulting change in position and motion on an object; identifying simple machines (lever, pulley, wedge, inclined plane, screw, wheel and axle) and explaining their uses (S4P3a). The students have been given a scenario where a tiger has been trapped in an enclosure, and it is up to them to help the zookeepers figure out how to rescue it. We will also study animal adaptations (S4L2a) and regularly check in with the tigers at the San Diego Safari Park using their live-stream video feed.