Where Rivers Meet the Sea Students make a physical model of fresh and salt water layering in an estuary. Plimsoll Floats Students shape boats of modeling clay and test their boats' abilities to carry a load in fresh water and in salt water. The Great Boat Float A take home activity in which family members shape boats from aluminium foil and test buoyancy in fresh and salt water. Time and Tides Students learn to read a tide table and to describe tidal differences using a 24 hour clock. In the Eelgrass Bed Students working in groups explore the eelgrass food web using a picture sheet, animal fact cards, and a reading with embedded questions.
Some plants can tolerate salt water.
Students experiment by irrigating seedlings, some with fresh water, some with salty. This reading provides a look at how humans make a living along our coasts and how marine animals are adapted to their environments. Students order the mixed-up events in a story which follows the life of crabs from egg to our dinner table. Scrambled Crab Students unscramble the mixed-up letters of crab terms, using the definitions of the terms as clues. Observing the Living Crab Students observe crabs swimming, walking, digging, hunting, and eating.