All light has a source, whether it is natural or artificial. Learn about how light is actually energy, and how it helps us see and communicate. Explore different sources of light and whether they are natural or artificial.
STEM Explorations is a fascinating new series of 26 informational texts, for grades 1–2, that takes young readers through the worlds of natural science and man-made inventions. Explore weather, seasons, states of matter, and more. Learn how to measure time and temperature, how halves and quarters can be used to share, and how sound travels. Basic nonfiction text features include: table-of-contents, chapters and sub-headings, image captions, easy-to-follow diagrams with labels, enriched vocabulary with pronunciation guides, fact boxes, callouts, glossarys and index.