Our school has adopted the Next Generation Science Standards and one of my favorite units in grade is our Sound Unit. NGSS asks that students conduct experiments to explain that vibrations make sounds and sound can make materials vibrate.
Construct an argument with evidence that some changes caused with heating or cooling can be reversed and some cannot. Balloon science for kids comparing gas, liquid and solids. Talk about how these states can be changed in certain situations.
Cool Science Experiments for Kids – Get your kids interested in science with these projects using physics and chemistry. Create a glitter tornado, shine pennies then turn them green, and catch ice on a string using supplies you have around the house.
Education 325 (Chemistry) Dancing Raisins Science Experiment for Kids - This is such a fun science project for preschool, kindergarten, grade, and grade kids. They will be amazed as they see chemical properties at work.