The American Educational Unmounted Double-Concave Lens has two inwardly curved surfaces that diverge, or distribute, light rays from a point for demonstrating optical principles. The lens has a negative focal length of 10cm and is 50mm in diameter. It is unmounted and has ground edges. Lenses are used in scientific experiments and classroom demonstrations.

Science education products incorporate applied math and science principles into classroom and homeschool-based projects. Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities. Science education projects include a broad range of activities, such as practical experiments in engineering, aeronautics, robotics, energy, chemistry, physics, biology, and geology.

American Educational Products manufactures learning materials in math, science, and reading/language arts for students in pre-kindergarten through grade 12. The company, founded in 1986, is headquartered in Fort Collins, CO.

What's in the Box?

• (5) American Educational Unmounted Double-Concave Lenses, 50mm diameter, 10cm focal length