Thames & Kosmos Science Advent Calendar - 24 Experiments

Thames & Kosmos Science Advent Calendar turns the countdown to Christmas into 24 short science activities. The US edition combines chemistry, biology, and physics experiments, with each daily box containing materials and illustrated instructions.

Daily Experiments And Contents

The calendar contains 24 experiments and 53 pieces. Most tools and materials are included, while activities also use household items such as vinegar, baking soda, salt, lemon juice, paper towels, cups, a mirror, and a ruler.

The activities are designed for children ages 8 and up and are intended to take only a short time. The set does not require batteries, and its four-page manual provides the printed instructions for the experiments.

US Size And Product Position

The calendar measures 14.6 x 11.5 x 2.4 inches and weighs 1.3 lbs. Those dimensions make it a flat boxed activity set rather than a tabletop laboratory, with one compartment assigned to each day.

Thames & Kosmos released this edition in 2023. The company adapts and distributes Kosmos science products for North American audiences, while the German KOSMOS line also includes a 2026 experiment calendar with 24 mini-experiments for children ages 8 and up.

Who It Suits Best

The calendar fits families looking for a structured STEM activity during the holiday season. Chemistry appears alongside biology and physics, so it is broader than a chemistry-only kit and works best for children interested in several science subjects.

Its limits are equally specific: several activities require household supplies, and adult supervision is part of the intended use. The 8-plus age rating, 24-day format, 53-piece count, and compact 1.3-lb package place it between a simple novelty calendar and a larger experiment kit.