If you are lucky enough to have Office 2013 or Office365 then you can upgrade Powerpoint for free with Office Mix. Office Mix is designed to make it easier to turn slides “into interactive online lessons and presentations.”
Further you now have Office Mix directly from within Moodle. To add an Office Mix –
Add an activity > External tool > Activity name: as required> External Tool Type: Office Mix> Save and return to module
Click name that you gace to this Office Mix> enter Office Mix URL
With Office Mix, you can record presentations, write on the slides and insert quizzes, polls, videos, screen captures and screen recordings and other elements, which the software “mixes” into what Microsoft describes as “an interactive, playable document” that students can then view within Moodle.
Quizzes inserted into “mixes” can have different question formats, including true or false, multiple choice and free form answer, and you can determine the number of attempts students get to answer, offer hints, set a timer, change the order of questions and provide feedback.
Office Mix also tracks usage of the presentations, giving analytics on data like which students accessed the “mix,” how many answers they got right and how much time they spent on each slide.
Get Office Mix from https://mix.office.com/
More details: https://mix.office.com/en-us/Education