# Unit 6

Click "Start Prezi" below to begin the tutorial. Use the arrows (or the arrow keys) to click through the steps of the tutorial. You may wish to click the "full screen" option in the lower right to get a better view. Once you have completed the tutorial, click the Exercise button below to test your knowledge.

## Problem Set 6

Problems open in a new window.

Practice 6.1: Atomic Formulas

Practice 6.2: Formulas of Predicate Logic

Practice 6.3: Subformulas

Practice 6.4: Free and Bound Occurrences of Variables

Practice 6.5: Abbreviations