This is an easy activity that can be adapted to many different subjects and topics. A basic rubric for grading and basic instrucstions you can customize to your standards and topics.
Students create a slideshow of pictures to tell a story that they narrate (with facts if non-fiction). I use this often in my history classes to help students get a grip on the feelings of different events like battles or revolutions.
If you have a 50mins class I recommend two days. One day to research and create the slideshow, and a second day to present. If there is a 100mins or more you can probably get it done in a class period.