This science kit allows young scientists to reproduce 100 experiments spanning the work, discoveries, and inventions of over 140 scientists and civilizations including Einstein, Aristarchus, al-Haytham, and more, a sweeping range of scientific discovery covering over 3,000 years. Made by the renowned 180-year-old German publishing house Franckh-Kosmos Verlags-GmbH (translated by Thames & Kosmos), the kit includes 94 pieces, allowing children to create the apparatuses necessary to conduct experiments; topics include light, heat, sound, magnetism, electricity, life, astronomy, molecules, and more. The experiments provide a thorough introduction to more than 100 scientists and their seminal discoveries. Includes a 96-page guide book that clearly explains and illustrates each experiment. Ages 10 and up. Made in Germany. The manufacturer has confirmed that this item meets U.S. Federal toy safety standards for lead. Box 21 1/4" L x 14 1/2" W x 3 3/4" D. (3 1/4 lbs.)