The Trachtenberg Speed System of Basic Mathematics . Greenwood Publishing Group. 1983. The system itself is taught to children in Switzerland. Mathematics in the Making . Has lots of diagrams and pictures . . .
Explanations are very good.
Dover Publications, Inc. 1958. Dover Publications, Inc. 1958. The Earth and Its Weather , 2nd Edition. Houghton Mifflin Co. 1981. An Easy to Understand Guide to the USA's Weather , 2nd Edition.