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! ***FEATURED TOOL Tool: Training spatial visualization: the trip-lets 3D game http://mathforum.org/mathtools/tool/49615/ 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. ***FEATURED TOOL Tool: Graphing Calculator | Derivative Calculator | Equation Solver http://mathforum.org/mathtools/tool/48085/ 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. ***FEATURED TOOL Tool: Primitives http://mathforum.org/mathtools/tool/49600/ Alec McEachran Primitives is a small Flash application for visualizing numbers in terms of their prime factors. ***FEATURED TOOL Tool: Quintic Equation Calculator http://mathforum.org/mathtools/tool/49338/ 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. ***FEATURED TOOL Tool: Quartic/Cubic/Quadratic Equation Calculator http://mathforum.org/mathtools/tool/49339/ 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) ***FEATURED DISCUSSION new PC & Mac Green Globs, free site licenses for teacher education sites http://mathforum.org/mathtools/discuss.html?&do=m&thread=___tool__g-15 Dave Kibbey provides more information about Green Globs. ***FEATURED DISCUSSION Understanding D, S & T http://mathforum.org/mathtools/discuss.html?&do=m&thread=___disc_13171_g-53 Glenys writes, "By using this quick graphing applet, students experiment with the variables and have an instant visual representation [of distance, speed, and time]." CHECK OUT THE MATH TOOLS SITE: Math Tools http://mathforum.org/mathtools/ Register http://mathforum.org/mathtools/register.html Discussions http://mathforum.org/mathtools/discuss.html Research Area http://mathforum.org/mathtools/research/ Developers Area http://mathforum.org/mathtools/developers/ Newsletter Archive http://mathforum.org/mathtools/newsletter/ \`. .--------------.___________) \ |//////////////|___________[ ] `--------------' ) ( '-' The Math Forum @ Drexel -- 11 July 2008