Grade 4 Science serves as the students' introduction to scientific fieldwork and research. In concert with the Fourth Grade’s study of New York City history, students analyze the Hudson River Estuary system and its multiple stakeholders. Two trips are taken to Dead Horse Bay. In the Fall, each homeroom spends a day performing fieldwork at the site. In the Spring, Lower School Science Club returns to the site to tag and release Horseshoe Crabs.
Scientific Fieldwork
During the first term, fourth grade science students dutifully prepare for their trip to Dead Horse Bay. The children begin their study of an estuarine ecosystem by replicating its abiotic components in the lab's 125-gallon aquarium. The concepts of salinity and pH are introduced through hands-on investigations. While at Dead Horse Bay, students perform water quality tests (and later submit the data to the National Parks Service), seine for fish (and invariably collect over 60 fishes of multiple species), collect and research "Neo-cheological" artifacts from the site’s percolating landfill, and perform a Beach Clean Up whereupon they remove (on average) over 90 pounds of plastic trash from the beach.
Marine Science
Building upon their study of marine chemistry, the curriculum segues into marine biology. As part of their study of marine invertebrates, the children learn to dissect both a cuttlefish and a squid. The students research cuttlefish anatomy and behavior and create "nature documentaries" on their iPads using the app, Puppet Pals HD, later presenting them to the class. Continuing their study of marine invertebrates, students work in teams of three to dissect squid and prepare lab reports on the iPad using the app Keynote. Later in the term, the course shifts its focus to marine vertebrates, specifically fish. Fourth grade scientists conduct an external analysis of eleven different species. As they investigate the connection between the form and function of fish anatomy, students are able to determine how a fish behaves within its habitat based upon its external features. Additionally, threats and stressors facing the global fish stock and conservation issues within the marine food web as a whole are addressed.
Aviation (The Physics of Flight)
Emanating from Fourth Grade Science’s examination of the history of Dead Horse Bay, is a study of aviation, since the site was home to New York City’s first municipal air field. Students engage with the physics of flight, analyzing the properties of air, lift, thrust, and drag, Bernoulli’s Principle and Newton’s 2nd Law within the context of an engineering design challenge in which students build and test airplane prototypes.
Lower School Science Club
Lower School Science Club is a relaxed and child-directed enrichment program. Attendance is voluntary and varies from week to week. Past projects have included: fossils, polymers, setting up and maintaining a household aquarium, designing simple circuits with Little Bits, presenting at Earth Day Chapel, a trip (outside of the school day) to tag and release Horseshoe Crabs, and various dissections (sheep brain), among other projects.