Nearpod

The app provides the ability to upload existing presentations as well as create new ones from scratch. Adding interactive features such as question/answer surveys, and drawings are easy and the pacing of presentation is controlled by the teacher.

Why should I use Nearpod? • Teachers have complete control over student devices.
 • Teachers can use it to assess student learning. Reports may be printed.
 • Students can submit their work and it can be shared with the class.
 • Students can work in small groups.
 • It can be used across all subject areas

Credit : http://www.bhasd.org/wp-content/uploads/2016/07/NearPodOverview.pdf

It is a very good application  to create presentations , I have also created a presentation about task based learning , here is the link