I have always liked using technologies in the classroom. Technology helps the lessons be more enjoyable and grasp the new materials easily. Here is what I found : Flipping and Creating Video Presentations
You can present the new grammar, new vocabulary or just make 15 mins of presentation about the topic that students find it hard by simply using a power point or word document and record your screen and even your voice. Here is the link to the application: Camtasia
Hope you will find it useful
Resource: Eltmagazine