Worksheets and video links for this activity can be found under 'Video Listings'. Print out a hard copy of your worksheet before you start viewing. After you print the hard copy of your worksheet, click the back arrow to bring you back to the site. CLICKING THE RED 'X' WILL LOG YOU OFF OF THIS SITE!! Students researching diabetes, beriberi, obesity, food allergies, and rickets must sign in at their video site by entering their first and last name then select the appropriate video.