Physics 101 contains over 75 equations and over a dozen simulations and tools covering the most important aspects of physics. Simulate a circuit, or launch a projectile, or work with the most common force diagram situations, and more. Whether you are a teacher wanting to augment your lessons or a student wanting better grasp of the material, Physics 101 is your go-to solution.
This is an encyclopedia that includes topics such as planets, earth, dinosaurs, civilizations, knights, inventions and transport. The textbook consists of about 1000 articles. Encyclopedia does not contain pictures, but consists of text.
The Periodic Table Explorer is a complete reference for the elements of the periodic table. It contains over 1400 pages of (searchable) text, a glossary of terms, biographies of important chemists, list of compound, hundreds of scientific constants, and much more. There's also over 200 images!