The probes are invaluable formative assesment tools to use before you begin teaching a topic or unit. The detailed teacher materials that accompany each probe review science content, give connections to National Science Education Standards and Benchmarks; present developmental considerations; summarize relevant research on learning; and suggest instructional approaches for elementary, middle, and high school students. Other books may discuss students' general misconceptions about scientific thinking about scientific ideas. Only this one provides probes, single, reproducible sheets, you can use to determine students' thinking about, for example, photosynthesis, moon phases, conservation of matter, reflections, chemical change, and cells. Each probe has been field-tested with hundreds of students across multiple grade levels, so they're proven effective for helping your students reexamine and further develop their understanding of science concepts.