1. Read the following passage about gliding animals. It is two pages long. 2. On the third page there is a space for 2-column notes. 3. Identify the main idea for the passage. Highlight the main idea on the passage. Go to the third page, and write the main idea of the passage on the left column. 4. Identify any supporting details from the passage that help support the main idea. Highlight the supporting details on the passage. Then, record these on the right-hand column of your 2-column notes page.