It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Complete this fair use evaluator tool. If you determine fair use is in your favor, allowing you to use the copyrighted works for the purposes of teaching your online course, then print, sign, date, and archive the document for your records. This documentation could prove valuable should you ever be asked by a copyright holder to provide your fair use evaluation and the data you used to support it.