Thame & Kosmos
Thames & Kosmos currently offers more than 140 kits containing a total of more than 3,000 experiments and projects, and more than 5,000 pages of rich, colorful manual content.
The science kits are organized into thirteen categories: Chemistry, Physics, Alternative Energy, Electrical Science, Biology, Earth Science & Natural History, Multi-Subject, Astronomy & Space, Historical Science, Construction+Engineering, Robotics, Crystals & Materials, and Arts & Crafts.