Thanks ganesh and Stephen.

I could introduce a small delay.

Could Medium be a little harder do you think?

I could also have more difficulty levels. Beginner, Medium, Challenging, Hard, Extreme.

Thank you all.

Good point, will see what I can do.

Well... I kinda just played around, took a screenshot, played some more, moved on.

I recall the first one was the ellipse preset with a "radius change" of something like 0.1.

The "three rings" had a basic setting like 80,1 80,-2 with a 3rd circle like 80,0.01 but I can't recall exactly.

Where is everyone's artwork?

Thanks everyone!

I will check out IE (why is it always the exception?)

Thanks everyone!

I have also heard "day", so they say "day-f day-x" but that doesn't seem common.

Hi iamaditya, very nice to hear you like the Calculus material.

I hope to add more Calculus one day, but over the last year or so I have added some Physics pages and am now going though the site updating the graphics. As well I am working with two translators creating a Chinese version of the site!

Updated: Mrs Goodsworthys Hats Puzzle - Solution

Yes? No?

Maybe an all-text version of "edit" would do the job. If I get some free time I will work on it

I have just rebuilt the indexes, maybe that will help.

I should mention that!