There also pictures and information about the real planes. Site has banner ads. From the National Highway Traffic Safety Administration.
Tricks Learn over a hundred yo-yo tricks.
Diagrams feature an unusual alien-looking character, but they are easy to understand. This site also includes difficulty ratings for each trick. Site has ads and links to its online store. There are chemistry experiments, games, a solution recipe, magic tricks, unique art ideas, and more. Some printable pages are only available in color.