Introduction to principles of macroeconomics/Calculating GDP

Watch these Khan Academy videos where different models of calculating GDP are explained. Then share your thoughts with your classmates by writing a blog post. Remember to tag (Wordpress) or label (Blogger) your blog post using the course tag:  Do these models make sense? Are you more confused than before? Sharing with classmates can be a valuable way to clear up your own thoughts and get help from other learners.