STC™ Program - Science and Technology Concepts STC BOOKS™ are colorful 64-page readers with research-based science content, giving teachers an ideal way to integrate science instruction during guided, independent, or take-home reading. Teachers use STC™ science curriculum materials to enhance elementary classrooms, increase student test scores, and meet national and state educational standards.

Grades 4-5. Floating and Sinking introduces students to the science behind objects floating and sinking in air and water. Part 1 discusses the history of floating and sinking, including a story about the only president awarded a U.S. patent. Several of the stories describe how scientists and engineers have put science to use in inventions such as ships, submarines, and balloons; other reading selections describe how the uses of boats determine how the vessels are designed and built. The final series of stories in the book explore floating and sinking in nature, including ways that children can determine their capacity to float or sink in water.