Thames and Kosmos STEM Advent Christmas Calendar 2025 Edition

Unwrap a new scientific surprise every day with our Science Advent Calendar! Each day, kids get to open a box filled with cool gear and clear instructions for a fun experiment. Perfect for the festive season or any time of year, it makes a fantastic gift or motivational treat. The quick experiments use everyday household items and explore chemistry, biology, and physics. Every box transforms to reveal step-by-step guides and fascinating science facts, blending holiday excitement with hands-on discovery in a delightful way.