Royal Fireworks Press Dr. Dave’s David Purvis Ph.D. Lot of 7 Science Books
The set includes all seven of Dr. Dave’s Teaching Manuals: Our Solar System, Oceans, The Digestive System, Electricity, Phases of Matter, Chemistry, and The Cell. Dr. Dave’s Teaching Manuals give teachers and science instructors of children between the ages of 8 and 14 (grades 3-8).