No. As this is an elective course with no experiments or tests, students are given the freedom to learn at their own leisure. Written in a conversational style, this course could easily be completed in a 14- week semester or spread out over a 28-week year of study. Students read the text and stop to answer On Your Own comprehension questions to ensure they have understood the materials. Detailed self-check answers at the back of the book provide all the guidance students need to succeed in this course.