This learning activity will provide an introduction to using Vickers microindentation hardness profiling for pre-fabricated aluminum joints. This exercise allows students to calibrate a Vickers microindentation hardness tester, to measure hardness profiles across, and to use computer software to plot the correlation between strength and hardness in the materials. This module is intended for upper-level and advanced undergraduates and can be done in three one-hour class periods. The document is available to download in PDF file format.