Science A-Z , a leveled elementary program, features differentiated science instruction with three levels at each grade range: Grades K-2, 3-4, and 5-6. The lessons can be used to supplement school science students and prepare students for No Child Left Behind science testing. It includes printable and projectable materials for life science, earth science, physical science, and process science. Resources available through Science a-z are: game packs, investigation packs, process activities, videos, science fair materials, scientist and inventor cards, science diagrams, and science debates. The cost per classroom ranges from $49.95 to $79.95 depending on the type of license. You can download free samples and/or get a 7-day free trial in order to investigate what’s available in this program.