A TI-Nspire Activity. In this activity, students will explore quadratic functions in the form of a motorcycle jumping off of a ramp. Students will maximize the height of the jump and the airtime of the jump.
http://www.tialgebra.com/activities/algebra_ii/337/

A TI-Nspire activity. In this activity, students investigate the total cost of a private party at each of three restaurants. Each restaurant states its pricing information differently, but all charge a flat room fee (represented by the y-intercept) plus a per guest plate fee (represented by the slope). Students model the cost of a party at each restaurant with the graph of a linear function.

Dinner Party Activity
http://education.ti.com/educationportal/activityexchange/download_file.j...

A cool flash program that graphically demonstrates the balance method for solving equations. Very nice!
http://www.mathsisfun.com/algebra/add-subtract-balance.html

A really clever idea - sort the steps in the proof of the quadratic equation. A ball moves vertically up (good!) or down (bad!) to let you know how you are progressing. I never thought that proving the QE could be this much fun!
http://nrich.maths.org/public/viewer.php?obj_id=1394

A flipchart that gives you access to an unlimited number of graphs, tables and yellow stickies.

This is an interactive TI-Nspire document that helps students to understand the balance method for solving linear equations.

Choose the Displacement-Time Graph Game. Move the car to draw the displacement-time graph. Once you understand the connection between the movement of the car and its related graph, test yourself by playing one of the games.
http://www.echalk.co.uk/

Type in the Input. The Function Machine applies the function and produces the Output. If you choose [Random], you will have to use some brainpower to figure out the hidden function.
http://www.amblesideprimary.com/ambleweb/mentalmaths/functionmachines.ht...

Linear Function Machine
With this function machine, you have to enter the correct linear function, using algebra.
http://www.shodor.org/interactivate/activities/LinearFunctMachine/

http://www.oswego.org/ocsd-web/games/BillyBug2/bug2.html

Billy Bug now has to look for grub in all four quadrants.

The Tower of Hanoi puzzle is an engaging and challenging problem for middle school students and an application of exponential functions. It also is the setting for an elegant proof by mathematical induction that the minimum number of moves M to move n disks from one disk to another is given by M = 2^n - 1.

Here is a Java implementation of the same puzzle.
http://nlvm.usu.edu/en/nav/frames_asid_118_g_3_t_2.html?open=instruction...