Helpful links for creating videos
In my classroom I can use video creation by having students solve a math problem on camera. They can explain the steps in a video. For blogs I do not see much use in a math classroom. I can see them as a good place where maybe they can explain what they learned today and maybe write down some questions they have. That way students can help them answer their questions or I can read there summary of what they learned and find out what they are missing. Lastly I can use podcasting as a way for students to explain a math process. For example how they find an angle to a triangle.