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non-porous stoneware
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snowflake obsidian
NATIONAL GEOGRAPHIC Science Advent Calendar 2023 geology non-porous stoneware24 DAYS OF SCIENCE Each day of December as Christmas approaches, kids will open an exciting science experiment to conduct from our world class science kits, or a gemstone or fossil to add to their collection! CONDUCT 13 FUN EXPERIMENTS We selected 13 incredible experiments from our science kits for this advent calendar. Kids will love hiding revealing a secret message, making a test tube glow, floating coins, growing a colorful crystal tree & much
