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Profile picture of Larry Ottman

Larry Ottman

@ottmanl active 11 years, 9 months ago
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  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Quadratic Zeros III 11 years, 9 months ago

    This app generates a pair of zeros randomly, then requires adjusting a quadratic function to match the graph to the zeros.

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Ellipse Equations 11 years, 10 months ago

    This app allows you to practice writing the equation of an ellipse (horizontal and vertical) given a graph. (G-GPE 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Hyperbola Equations 11 years, 10 months ago

    This app allows you to practice writing the equation of a hyperbola (horizontal and vertical) given a graph. (G-GPE 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Ellipse Equations 11 years, 10 months ago

    This app allows you to practice writing the equation of an ellipse (horizontal and vertical) given a graph. (G-GPE 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Circle Equation 11 years, 10 months ago

    This app allows you to practice writing the equation of a circle given a graph. (G-GPE 1)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Conveyor Belt* 11 years, 10 months ago

    This app explores a physical motion problem and its connection to trigonometric functions. (F-TF 5)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Vertical Dilations 11 years, 10 months ago

    This app allows students to experiment with vertical dilations of the typical root functions experienced in high school Algebra.  (F-BF 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Residual Plots II 11 years, 10 months ago

    This app helps illustrate how the residual plot relates to the proper choice of a function to fit a particular data set. Students should learn to look for a random, scattered pattern to the location of the residuals, rather than a predictable curve shape. (S-ID 6a)

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    Larry Ottman uploaded a new app: Offcenter Cam* 11 years, 10 months ago

    This app explores a physical motion problem and its connection to trigonometric functions. (F-TF 5)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: The Tangent Function 11 years, 10 months ago

    This app allows the user to explore the relationship between the unit circle and the tangent function. (F-TF 2, 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: The Cosine Function 11 years, 10 months ago

    This app allows the user to explore the relationship between the unit circle and the cosine function. (F-TF 2, 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: The Sine Function 11 years, 10 months ago

    This app allows the user to explore the relationship between the unit circle and the sine function. (F-TF 2, 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Alternate Hyperbola… 11 years, 10 months ago

    This app allows you to experiment with an alternate construction of a hyperbola.  The tracing of the perpendicular bisector of the segment between a point on a circle and a point outside the circle create a hyperbolic locus. (G-GPE 3)

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    Larry Ottman uploaded a new app: Alternate Ellipse C… 11 years, 10 months ago

    This app allows you to experiment with an alternate construction of an ellipse.  The tracing of the perpendicular bisector of the segment between a point on a circle and a point in the circle create an elliptical locus. (G-GPE 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Hyperbola Definition 11 years, 10 months ago

    This app allows you to experiment with the definition of a hyperbola as the set of points in which the difference of the distances from two fixed points is a constant. (G-GPE 3)

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    Larry Ottman uploaded a new app: Ellipse Definition 11 years, 10 months ago

    This app allows you to experiment with the definition of an ellipse as the set of points in which the sum of the distances from two fixed points is a constant. (G-GPE 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Horizontal Dilations 11 years, 10 months ago

    This app allows students to experiment with horizontal dilations of the typical root functions experienced in high school Algebra.  (F-BF 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Horizontal Shift 11 years, 10 months ago

    This app allows students to experiment with horizontal translations of the typical root functions experienced in high school Algebra.  (F-BF 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Vertical Shift 11 years, 10 months ago

    This app allows students to experiment with vertical translations of the typical root functions experienced in high school Algebra. (F-BF 3)

  • Profile picture of Larry Ottman

    Larry Ottman uploaded a new app: Quadratic Zeros II 11 years, 10 months ago

    This app allows you to adjust the zeros of a quadratic function to match the factorization, then verify them with the general function.  The examples include more challenging factorizations (a not equal to 1).

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