This video is a good starting point. The improvement you need is to have background video which demonstrates the Maths task as you speak (or which matches your text). Check this one as an example: http://tisoliveri.blogspot.co.nz/2014/03/blog-post.html
This video is a good starting point. The improvement you need is to have background video which demonstrates the Maths task as you speak (or which matches your text). Check this one as an example: http://tisoliveri.blogspot.co.nz/2014/03/blog-post.html
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