Read and Understand Science, Grades 23 presents stories that range from low-second grade to high-third grade in readability. Topics presented in Read and Understand Science, Grades 23 include: Life Scienceflowering plant life cycle, seed dispersal, parts of a tree, metamorphosis, honeybees, invertebrates, the platypus, digestion Physical Science--magnets, sound vibrations (hearing), hot air rises, friction, simple machines, heat transference Earth and Space Science-- why stars seem to twinkle, rainbows, movements of Earth. thunder and lightning, the Moon, soil, fossils Science and Technology--using tools to measure, invention of Velcro, microscopes, recycling, manmade product (plastics)