This is a Unit on High School level Logic. The unit is comprised of worksheets/handouts that can be used as a formal lesson or class notes or even for practice. Topics included are Mathematical vs. Non-Mathematical Sentences, Negation, Conjunctions/Disjunctions, Conditionals/Biconditionals, Inverse, Converse, and Contrapositive. Short cumulative reviews are included in most lessons. A ten-question mixed unit review is also included which could serve as a review sheet for a unit exam.