I just love a good, quick, and EASY experiment to hook those kiddos and get them writing up a lab report! This one is exciting, low prep, and engaging. Kids are given some background on chemical and physical reactions. (Check out some cool Brainpop, Generation Genius, or Flocabulary videos for extra background knowledge) Your class will then create their own lava lamps using a mini plastic water bottle, vegetable oil, water, food coloring, and alka-seltzer tablets.
I've done this at home with my three-year (The expression on her face when we dropped those alka-seltzer tablets in!) and in the classroom with 20 students. When teaching fourth grade, I used mini pint-sized water bottles and let each student do their own. In second grade, I used regular-sized water bottles and pairs kids up. Either way, it was super cool, and really fun!
Try it today!
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