Polar Coordinates and Graphs

    By |April 9th, 2017|Categories: Graphing Calculator, PreCalculus|Tags: , , , , , |

    I remember being frightened by the polar coordinate system and graphing equations using it when I was in my students' seats many years ago. With graphing calculators, this doesn't have to be intimidating. I started [...]

    Sine, Cosine, and Tangent Ratios

    By |March 26th, 2017|Categories: Algebra II, Geometry|Tags: , , , , |

    Spring break brought out the creative juices. I spent time reworking guided notes sheets from last year into doodle notes this year. I like how they turned out. The Tangent Ratio Sine and Cosine Ratios [...]


    By |March 26th, 2017|Categories: PreCalculus|Tags: , |

    It's conic section time in Pre-Calculus. Learning from last year, I added a section on circles. I polled my students prior to spring break and they didn't recall the equation of a circle in standard [...]

    Similar Polygon Exploration in Geogebra

    By |January 4th, 2017|Categories: Geometry|Tags: , , |

    Use Geogebra to create similar polygons, compare the scale factor of a dilation with the side lengths of theĀ image and preimage compare the scale factor with the ratio of the perimeters compare the scale factor [...]