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Judy Spicer  These are the best of times in mathematics. We can make visible ideas that previously were hard to model and visualize ideas that were impossible to imagine. ,   G"Teachers should use technology to enhance their students learning opportunities by selecting or creating mathematical tasks that take advantage of what technology can do efficiently and well- graphing, visualizing and computing" Technology Principle of NCTM Principles and Standards of School Mathematics: (NCTM, 2000, p. 25).&HG"" QThis is an example of a visualization not possible in any other format. HypercubeRH 7 0HQ  Technology "blurs some of the artificial separations among some topics in algebra, geometry and data analysis by allowing students to use ideas from one area of mathematics to better understand another area of mathematics" (NCTM, 2000, p. 26) Center for Technology Education *Z   0  What makes a good interactive learning activity? What are some examples of Web-based activities that you like? Dislike? Let's begin by visiting NCTM's Illuminations site and exploring Understanding Distance, Speed, and Time Relationships Using Simulation Software Visit ENC Online and search their database of over 20,000 curriculum resources for teaching math and science grades K to 12. jZZ~Zy"JO~Jw"O n 0< 0t 0$' &Let's begin by visiting NCTM's Illuminations site and exploring Understanding Distance, Speed, and Time Relationships Using Simulation Software (AO2O 0, 0A) {Visit ENC Online and search their database of over 20,000 curriculum resources for teaching math and science grades K to 12|| 0* vNext we will examine six web sites and examine what makes the interactive materials useful. #1 Learning Connection Ls_ 0_r" # 2 ExploreMath.com" < 0ISystem of two quadratic inequalities Parabola with horizontal directrix 0HH: 0$? 0%G 0HI# # 3 JAVA Sketchpad DR3 Gallery> 0Sine Wave Geometry DR 0$ # 4 Math Cove 1 0Pythagorean Theorem The applet tiles a deficient 2n by 2n grid using right trominos. 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