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       MATH TOOLS NEWSLETTER - JULY 11, 2008 - No. 65

 As you browse the catalog, please take a moment to rate a
 resource, comment on it, review it -- start a new discussion,
 or join an existing conversation!

 Tool: Training spatial visualization: the trip-lets 3D game
 Humberto Jose Bortolossi and Rogerio Vaz de Almeida Jr.
 This applet is a 3D game to train spatial visualization.
 The user must rotate a 3D solid and identify three letters
 that make an English word.

 Tool: Graphing Calculator | Derivative Calculator | Equation Solver
 Amir Rashedi
 This calculator graphs functions, parametric curves and equations
 in Cartesian or polar coordinate systems. It also calculates
 derivatives and solves equations by finding roots of functions.

 Tool: Primitives
 Alec McEachran
 Primitives is a small Flash application for visualizing
 numbers in terms of their prime factors.

 Tool: Quintic Equation Calculator
 Brian Kieffer
 This calculator computes real and complex roots for any
 quintic polynomial. It applies the Newton-Raphson Method,
 which iteratively finds an approximate root to the Quintic,
 starting out with a random initial guess. Then it factors
 the equation out to (x - r1)(ax4 + bx3 + cx2 + dx + e) and
 then solves the left-over Quartic Equation for roots 2
 through 5.

 Tool: Quartic/Cubic/Quadratic Equation Calculator
 Brian Kieffer
 This Calculator can solve Quartics (AX^4 + BX^3 + CX^2 +
 DX + E = 0), Cubics (AX^3 + BX^2 + CX + D = 0) and
 Quadratics (AX^2 + BX + C = 0)

 new PC & Mac Green Globs, free site licenses for teacher education sites
 Dave Kibbey provides more information about Green Globs.

 Understanding D, S & T
 Glenys writes, "By using this quick graphing applet, students
 experiment with the variables and have an instant visual
 representation [of distance, speed, and time]."


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            The Math Forum @ Drexel -- 11 July 2008