This activity page is a part of my Cookie Dig lesson that I do with my 4th graders each year. I have attached the full lesson plan for this activity!! This will lay it all out for you and you can print it off and use it! But it is in Microsoft Word, so you are able to edit it to fit your state's standards, objectives, and I can statements (mine is North Carolina).
Essentially, students are using toothpicks to dig out as many perfect chocolate chips as possible to simulate what archaeologists do. They are timed and by the end they count up how many perfect chips they extracted. We also discuss what the cookie and the chips represent (the dirt/rock and artifacts) and there is a spot to write a reflection after the activity and discussion. And then, of course, they can eat the cookie once it is finished!