This worksheet is based upon the Britannica School Cardiovascular System Article (Reading Level 1). At the bottom of the sheet is the citation to find the article. However, the questions are basic enough that they can be used for most articles or general facts about the cardiovascular system. I specifically created this worksheet to go along with the ByDesign Science, Level 4, Chapter 4 Lesson 1. However, it can be used with any science curriculum on the human body or the body systems. An