Spending time on the beach and collecting shells gives me the materals I need for my next set of Discovery Bottles. I fill the bottles half full of shells and then add playsand to cover all but about an inch of shells. Seal the lids with tape and shake. Each time different shells will come to the top.
Add books about shells to the library and compare pictures with the shells in the bottle. This can lead to dictation, artwork, and charts related to the children’s findings.