As part of their science curriculum, students in Bethany DiTullio’s fourth grade class at Allapattah Flats K8 recently studied physical and chemical changes of matter. As a culminating activity, the students performed four different experiments using baking soda and vinegar, salt and water, glow sticks, and crumbling paper. Students then decided whether a physical or chemical change occurred in each experiment based on their observations and knowledge. Students filled out their lab sheets with hypotheses, observations, and data as they went. Pictured, from left, are Chloe Perlmutter, Kyleigh Reese, and Christopher Daley.