There are many ways of producing videos. It might be great if students engage in videography and animation for their projects. See this post from FT4T about “Create Stop Motion Animations with KomaKoma“. Potential usage in the classroom:

• Demonstrating mathematics understanding with manipulatives and/or hand writing
• Showing the process carried out of a science experiment step by step
• Using the time lapse feature to study a slow moving process

Have fun!