MATH TOOLS NEWSLETTER - AUGUST 5, 2006 - No. 42 Don Link, a sixth grade math teacher at Indian Creek School (Crownsville, Maryland) and a Tool Fest '04 participant, shares these PowerPoint files that he has developed and used with his students. A Geometric Proof of the Pythagorean Theorem http://mathforum.org/mathtools/tool/25463/ Exponents http://mathforum.org/mathtools/tool/25389/ Math Jeopardy Template http://mathforum.org/mathtools/tool/25388/ Variables and Unknowns http://mathforum.org/mathtools/tool/25405/ Download and try Don's files. Please take a moment to rate Don's or other resources, comment on them, review them -- or start a new discussion! ***FEATURED TOOL Tool: Classic Chembalancer Sulan Dun http://mathforum.org/mathtools/tool/24454/ Classic Chembalancer is an online game that teaches balancing chemical equations by inspection. Students type coefficients in front of each molecule and the computer draws the corresponding number of molecules so students can make the elements or groups of elements match -- a logic similar to the kind exercised in simplifying algebraic polynomials. ***FEATURED TOOL Tool: Jeff's Utilities: Simple Conversions at your Fingertips Jeff Napier http://mathforum.org/mathtools/tool/24611/ Simple conversion utilities for such measures as lengths, areas, volumes, liquid measures, weights, time, speed, temperature, money, bytes, Roman numerals, and more. ***FEATURED TOOL Tool: Chaos In the Classroom - Visualizing the Logistic Equation Ben Weintraub http://mathforum.org/mathtools/tool/24771/ The logistic equation is a simple dynamical system that illustrates very nicely the emergence of complex chaotic behavior from a single, simple equation. This lesson plan is targeted towards high school students with a good grasp on the concepts of functions and graphing, and could serve as an entry-point into a larger unit on chaos theory and chaotic systems. ***FEATURED TOOL Tool: K3DSurf for 3D Mathematic Drawing Abderrahman Taha http://mathforum.org/mathtools/tool/24805/ K3DSurf is a program to visualize and manipulate mathematical models in three, four, five and six dimensions. ***FEATURED TOOL Tool: MathsNet: A Level Pure C2 Module Mathsnet http://mathforum.org/mathtools/tool/25071/ Solving sine equations. This shows a sine curve that can be manipulated and a horizontal red bar that moves up and down. Students are given equations to solve, like sin x = -.5. They graph sin x and then put the red bar at -.5 and find how many solutions there are in the given range. No feedback is given, so students won't know if they have the right answer. ***FEATURED TOOL Tool: Absolute Value Problems Larry Green http://mathforum.org/mathtools/tool/25086/ Students are given an absolute value equation, and then given boxes to fill in step by step. After each step is complete, there is feedback, with help if the answer is wrong. This continues until the problem is complete. Very good for self checking concepts of solving absolute value equations. ***FEATURED DISCUSSION Reflections on Graphing Math Tools http://mathforum.org/mathtools/discuss.html?&do=m&thread=___disc_13171_g-6 Swannee explains, "I feel this is much easier to use and to instruct than using the graphing calculator. How can we record the different data and save it to a table?" 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 -- 5 August 2006