Read: For kids in their early childhood, read a highly-rated National Geographic book about the ocean like Little Kids First Big Book of the Ocean or Ultimate Oceanopedia: The Most Complete Ocean Reference Ever
Calculate: Calculate time to sail (or swim etc) across different distances.
Do Research: Investigate the impact of the ocean in the weather systems (Gulf Stream, temperature regulation, etc).
Compare: Compare two global locations with either the same latitude, longitude, or altitude, or being by water or inland.
How are each of the ocean zones different and how is this related to the amount of light each receives?
Teach Passively: Explain how water warms and rises at the equator and cools and sinks in the north and south.
Teach Passively: Explain how water temperature is seen in the ocean currents which drive trade winds, etc.
Read: Read The Soul of an Octopus. Synopsis: “Scientists have only recently accepted the intelligence of dogs, birds, and chimpanzees but now are watching octopuses solve problems and are trying to decipher the meaning of the animal’s color-changing techniques. With her “joyful passion for these intelligent and fascinating creatures” (Library Journal Editors’ Spring Pick), Montgomery chronicles the growing appreciation of this mollusk as she tells a unique love story…”
Watch: Investigate how the ocean was historically used for travel and trade and investigate how technology has changed this over time/compare to modern times. There are several YouTube videos to watch on this topic.
How else might important subject matter be learned from this interest topic? Comment below! Half-baked ideas are more than welcome, too.