Activity example: Choose several webpages, break students into groups and have them answer a questionnaire about the webpages. Discuss findings. Here is an example you are welcome to adapt, Google forms work well for the questions too.
Group 1
Group 2
Group 3
Group 4
All of these articles were found via Google using a keyword combination always including 'schizophrenia' and including either 'marijuana', 'weed', or 'cannabis'