I've never assigned a video before. The "notetaking tool" for students to use with video watching is an interesting learning tool. I'm wondering about combining this with something like Kahn Academy. I'm going to want to experiment with this one.
Marilyn Burns through the Gates Foundation created this helpful formative assessment for students around grade 3 and up. It assesses math reason for three areas: Number sense, decimals and fraction. Looks like a great diagnostic tool.