Hi, @sherry-mathew – Can you share any locality information? (location, geologic formation, etc) Also, can you take some better-quality pictures? It is difficult to make out the material in the second, third, and fourth images.
Your first image is of bivalves (mollusks). Perhaps @michael-reagin could help with the ID?
@sherry-mathew are you in Kent Crippen’s class? This looks like material from the Aurora matrix. Here’s what you’ve got:
Clam (possibly oyster) shells
You may be able to identify some of the clams. Try going to http://www.fossilguy.com and looking at the identification guides for Maryland and Virginia. The fossils from there are similar to the ones from Aurora.