Luana Mitten, "World of Science Encyclopedia,10 Volume Set"
2008 | ISBN-10: 1600446469 | 623 pages | PDF 

World of Science Encyclopedia teaches the essential concepts for elementary school science instruction. This comprehensive set helps students with the transition from K-4 to 5-8 grade level studies. From basic objects in the sky, life-cycles, and properties of earth materials to the more advanced, structures of living systems, forces and motion and science technology, students will find what they need.