Unit 1D, Earth's Land and Water Topic: Rocks Franklin Institute Rock Hounds: Rock Hound Collection Safety Find out how to gather rocks safely. http://www.fi.edu/fellows/payton/rocks/safety/index.html Franklin Institute Rock Hounds: Rock Layers Jigsaw Puzzle Put the puzzle pieces together. http://www.fi.edu/fellows/payton/rocks/puzzles/layers/layer1.htm Franklin Institute Rock Hounds: Digging for Words Dig for words about rocks. http://www.fi.edu/fellows/payton/rocks/puzzles/seek/seek1.htm