I recently ran across a graphing calculator online. It is very easy to navigate and allows the user to share the graphs they create. It is a product of Desmos
. Within a couple of days, they had upgraded to a product that allows the user to create an account to save and share the graphs that they create, abettercalculator
. This is awesome. Here is what the website looks like.
Along the left side, you get to enter equations, points, etc. It has a keypad, so you can choose numbers, letters, functions, etc. These are all browser based, which makes it very easy to navigate on an Interactive White Board. I think teachers will love this.
As I mentioned before, a logged-in user can save graphs into a folder, share the link to the graph, or save an image of the graph in .png format. It even allows the user to tweet out the result of the graph.
Another great feature is the customizable settings of the graph. You have control over the x-axis, y-axis, scales, etc. You can even use pi as a label. Nice for trigonometry. Give the page a try. It is probably a page you'll come back to frequently.