Nico Bakker sent in this document saying *Here is another example of the beauty of Graphing Calculator.*

Thank you, Nico!

Click the image to see the equations.

Click here for the movie.Cathie Markstahler sent in some of her students' work saying

It is a great tool for discovery learning. I also have my precalc students do an art project where they have to design a picture using a rubric that requires several functions, reflections, transformations, shading and limited domains. I've attached some student work that I thought you might enjoy seeing.

(Click the image to see the equations.)

Cathie Markstahler sent in some of her students' work saying

I use it to instruct beginning algebra students all the way to high school precalculus classes. It is a great tool for discovery learning. I also have my precalc students do an art project where they have to design a picture using a rubric that requires several functions, reflections, transformations, shading and limited domains. I've attached some student work that I thought you might enjoy seeing.

(Click the image to see the equations.)

Nico Bakker sends in this document showing a method of calculating the area of a circle.

Fielding Brown sent me this.

The rim realizes in 3-D a particular Lissajous, and is made by laminating thin wood strips with aluminum around a form. The strings are dacron kite string fixed to the rim with small eyelets. The piece was just recently part of a solo show of my work at Cape Cod Museum of Art.

Chris Young posted this document to the Graphing Calculator users group illustrating integrating the volume of a surface of rotation.

Melkana Brakalova-Trevithick sent me these equations showing the surface traced out by the osculating circle moving along a helix.

James Taylor posted on the Graphing Calculator users list showing square and octogonal wheels moving smoothly along a road made of catenary arcs. I rewrote the equations in terms of a complex variable z=x+iy. Download Graphing Calculator file.

Check out Stan Wagon's square wheeled bicycle here.

My favorite e-mails are from students who send me art made in Graphing Calculator. A teacher yesterday sent me this created by one of her seventh grade students. Check out those equations! (You can download the document here if you have Graphing Calculator or the Viewer.)