Graphing Trig Functions

The best way to explore trig. graphs is to play with them and see what happens when you change various parts of the equation.

Click here and get a better understanding of how it all works!

(illustration: NCTM.org)

Incenter

 How can you fit a circle perfectly into any triangle?

Click on this link to explore the incenter.

Whats the difference between the incenter and the controid of a triangle? Email me if you know the answer and win a prize!

Angles in a Circle

Explore the relationship between the Central Angle and Inscribed Angles in a circle using this interactive tool.

By moving the points on the arc see how the size of the angle stays the same as long as the arc remains the same. What do you notice about the size of the central angle and the inscribed angle?

(illustration: summerlectures.co.uk)

Graphing Circles

Go to this website and explore graphing circles interactively. Play around. by moving the points and you can see how the equation of the circle changes, helping you to understand how we came up with the formula.

Happy Pi Day

March 14th was a day just made for math people!

This may sound irrational but it has its own web page. Visit it and send someone a pi-card. Didn't know you could send pi thru the internet did you?

(Illustration from NCTM.org)

Geometric Transformations

Transformations are best understood if you can see what happens to a shape when you move it, reflect it or turn it.

Click on this link and play around with the different transformations to get a better understanding. You need Java on your computer to use it.

Graphing calculator

I've found a great new online graphing calculator. Its a lot easier to use than an earlier version I had posted so I have updated the side link as well.  You can do all the things we do in class by yourself at home by playing with it for a few minutes. It allows you to graph more than one line and then using the menu above the graph you can create a table and find intersection points. Use the online keyboard to type in your equations.


Click here and then pick "graphing calculator".