Gathering Grid A gathering grid can help you organize information for a research report. Write your questions in the left hand column Write the title of our sources at the top of each column Write answers you find and note where you found them Click here to see an example. Subject Question 1 Question 2 Question 3 Source 1 Source 2 Source 3 Example Gathering Grid Subject: tornadoes twister.com How do they form? National Geographic Tornado! A warm and a cold front clash and make a supercell. (p.120) Where are they found? Throughout the world, though mostly in Tornado Alley in U.S. (p. 13) How do they cause damage? Wind throws objects; hail smashes stuff. When do they form? March through early July Low pressure rips off roofs. (p. 122)