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Free, peer-reviewed, openly licensed textbooks for high school and college courses in math, science, social sciences, and humanities, readable online or downloadable. Teachers can use them as core…

This PhET simulation provides an interactive virtual laboratory for exploring Beer's Law and spectrophotometry. Students can manipulate variables such as solution concentration, path length, and…

The BioDigital Human offers an unparalleled interactive 3D virtual model of the human body, providing detailed insights into anatomy, disease states, and treatment options. This cloud-based platform…