Human Physiology Experiments with Go Direct Packages, Great way to get started with most of the sensors needed for the experiments in the Human Physiology lab book
Go Direct Projectile Launcher to investigate important concepts in two-dimensional kinematics. Launch steel balls at angles between 0 and 70 degrees and over distances up to 2.5 m. Built-in photogates and angle markings provide easy and accurate measurement
Go Direct* Tris-Compatible Flat pH User Manual, used for any lab or demonstration that can be done with a traditional pH meter, including acid-base titrations, monitoring pH in an aquarium, and investigating the water quality of streams and lakes