It's actually pretty well done. I bet none of the people that were not involved in the creation of the video would notice any green-screen artifacts.

However, to reduce green screen artifacts:

• get more distance between the speaker and the screen
• have separate direct light (from the ceiling, behind the speaker) to the screen
• if the speaker faces a white wall while speaking/shooting, this wall will reflect a lot of the green color onto the speakers front
• neutral light from front, top and side of speaker to outshine green bouncelight on shoulders

Concerning the animations: They are fine, I'd just go by less (or faster) effect on the text fading in and out. Consider that a video is often subject to stutter when played by flash

Lastly, I'd try to shoot in a higher resolution (maybe HD) than finally needed for the flash video and shoot the speaker in one setting (zoom, light, positions) for everything. I am not sure this is not already done, I think I've seen a difference in the light on his chest. The higher resolution still allowes you to take the speaker in chest-head or head-only with the same settings and gives you more freedom within the editing.

How are you doing animations now? Maybe if you explain your production workflow, we can help suggest improvements. As Limbus said, the videos look good now.

I would use Motion for animation if you are editing with Final Cut Pro since it's built in.

Also, what kind of animations do you want to make that you can't make now?

The link did not work for me so i viewed the tutorial on game processor speeds. I thought it was great. The other suggestions are probably more appropriate but I thought I'd put this out their just in case.

There is a software program that is a simplified Flash animation clone called SwishMax3. It can export out to video. It does not require you to be a flash programmer. You could set up the math text as animations fairly quickly. This is a link to the product page, click the text effect to see if this is what you had in mind to animate text and numbers.

You can try out the demo to see if it meets your needs. In the meantime, I pass the site along to the parental units quaking in their boots waiting for the question their kids will ask.

Thank you for your feedback. Re: the animations, they're currently just still images. I would like to be able to animate the math graphics; for instance, to be able to show the movement between the points on the graph.

Is this a Motion animation?

Check out shuttlefx.com. They'll animate your static screens for a really good price. They animated a graph for me.