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In this lesson, we evaluated the cash flow statement of Walmart, Sears, Intel, and Kodak. The lesson provides good and bad cash flow statements so students could see the difference between risky and healthy companies. One of the key factors learned in this lesson was the importance of the operating activity and the operating activities section of the statement. Since the investing and financing activity are dependent upon the operating activity, it became obvious this section is the lifeblood of any business.