Hi everyone! Roger's got a super cool drawing plan for today! He's on a mission to draw something super magical – A unicorn! And it will be sparkling with glitter, making it a rainbow of fun and ...

You draw a circle on the screen, press the Analyze button, and the site will score your circle-drawing efforts based on a number of critera, such as the radius of the circle, ...

Watch him draw a perfect circle: You can also take your time, and use your thumb like a protractor, to draw an almost-perfect circle with a pencil, as this demonstration shows: ...