"hobo data logger"

A set of 15 samples of different materials used to challenge students to identify materials based on measurement of their density. For some specimens this will be straightforward. In other cases, it will lead to a discussion of uncertainty in measurements and data, and to an awareness that different materials may have nearly the same density.

Nearly frictionless, accurate, durable.

This sturdy Hooke's Law apparatus features a mirrored scale to eliminate parallax error.

This backboard mounts directly to the Visual Scientifics base, enhancing video analysis.

This base platform supports the full range of Visual Scientifics activities and accessories.