We have spent the last 2 weeks learning about coasts. You can download some of the resources, lesson plans and worksheets we used here:
Tide pool lessons and field activities
Australian identification guide and resources
TES teaching resources
Of course, to study coasts properly, we needed a camping trip! We visited the South Coast of NSW between Ulladulla and Mystery Bay staying at basic bush camp-sites. The children explored the coastline by making drawings, collecting shells, fishing, beach combing, taking temperatures of rock pools, identifying man-made features, walking, rock scrambling, swimming, snorkelling, visiting the lighthouse and more. We even managed to find a ship-wreck.