must have tool for engaging learners

One of the newest entries to interactive slide presentations is PearDeck. This free web tool (with a paid version) allows you to create live sessions for your slides and invite up to 50 participants to join in. As the instructor, you control the flow while they use their devices to respond to questions you have previously designed or add in the moment. 

The free version includes 10 different response types, from  multiple choice to drawing on a grid.  You can then choose to show anonymous results in real time. For data analysis, upgrade to the paid version. 

I used this recently and was impressed with the intuitive interface for myself as an instructor, and and for my participants. Learners were highly engaged with my content and I was able to adjust the talk based on the formative, immediate feedback I was receiving. This tool is definitely on my "must have" list!