- Book List
- This list, prepared by the Lawrence Hall of Science in California, suggests good book titles to incorporate in your investigation.
- Recommended Reading
- This list also features trade books and children's literature that connect with your investigation of land and water.
- TopoZone boasts contiguous topographic maps of the entire United States. Created in collaboration with the USGS, it is perhaps one of the easiest ways to have map sets for an entire class.
- What's In My Watershed?
- Help your students develop their map-reading skills while investigating the Pennsylvania watersheds.