This calendar 2024 is a 24-day adventure for kids to conduct 13 fun experiments and collect 11 stunning specimens. Each day, kids will open an exciting science experiment to conduct from world-class science kits, or a gemstone or fossil to add to their collection. The final day includes a special specimen for kids to unearth from a mini dig brick. Price drops from $39.99 to just $25.49. Shipping is free for prime members or on orders over $35.