Fisher 
Just the Facts: Physical Science, Grades 4 — 6 [PDF ebook] 

Engage young scientists in grades 4-6 and prepare them for standardized tests using Just the Facts: Physical Science. This 128-page book covers concepts including properties and phases of matter, atoms and elements, motion and force, air pressure, sound, light, heat and energy, and magnetism and electricity. It includes activities that build science vocabulary and understanding, such as crosswords, word searches, graphing, creative writing, vocabulary puzzles, and analysis. An answer key and a standards matrix are also included. This book supports National Science Education Standards and aligns with state, national, and Canadian provincial standards.