It is an easy to use DVDRom (No installation required) that facilitates access to more than 2,700 printable pages (PDF files) for teaching science to students in the early grades of instruction (3rd to 5th Grade) More than 650 full color visual literacy pages, more than 450 Vocabulary Cards, memory games, word search puzzles, and graphic organizers. All material available in full color backline masters (English and Spanish).