On Monday, Jan. 23, Junior School students in Brianna Baumgartner and Robert Gartei's senior pre-kindergarten class created their own dinosaur eggs using baking soda and water, and on Tuesday, Jan. 24, the class excavated their eggs by adding vinegar to create a reaction and reveal a dinosaur. The class continued the activity with their buddies from Marci Anderson, Lauren Notaro and Lisa Budd's fourth grade classes. The fourth graders completed a research activity on dinosaurs and shared what they learned with their SPK buddies.