4th graders in my class may earn extra credit by going and doing activities related to our social studies and science curriculum. The students then just need to do a short presentation to share what they experienced with the class.
The following links take you to great ideas for extra credit:
Marshall Gold Discovery SHP- Coloma Gold Bug Park and Mine Empire Mine California State Railroad MuseumCalifornia Museum Angel Island SP
California Caverns State Historic Landmark
California Academy of Sciences
The Discovery Museum Space and Science Center