OtTeR2 Minerals and OtTeR2 Rocks are practice exams for the GLG103 lab practicals ending the mineral and rock segments of the course.

You will be shown photographs of the 31 minerals or 28 rocks covered in GLG103 Physical Geology and given four buttons with possible names for the shown sample.  Click on the button you believe has the correct answer and click the Next button for an updated score.  Repeat this selection for all of the samples presented to you.

The original Java-based OtTeR is still available for download: OtTeR-Minerals and OtTeR-Rocks.  This version is no longer maintained and students are asked to use OtTeR2.