NGSS science · 2nd grade
Show that some changes to Earth happen quickly and some slowly.
2-ESS1-1 is part of the Next Generation Science Standards. Rock Hound practices it. Standards vary by state, so check with your kid’s teacher for the exact match.
Rock Hound: With a geologist's field kit, kids learn the three rock types and name common rocks. They follow the rock cycle, test minerals for hardness, and see how fossils form and how weathering wears rock down. A miss lights up the diagram that explains it.