Summary Break open geodes to find the crystals inside. Science content Chemistry: Crystals (7) Earth/Space: Rock cycle, Earth Materials, Natural resources (5) Lessons activity is in Rock observation and testing Materials geodes. Note that some are much better quality than others hammer old chisel if the geodes need to be opened cleanly old sock Procedure To break the geodes into many pieces, put one in a sock and hit it with a hammer. This will make many small pieces, that can be shared among students. If there are more geodes available, and each student can take home a larger piece, you can try to break the geodes open by breaking them into just two or three pieces using the chisel and hammer. Grades taught Gr 1 Gr 2
