## MeasurementLockhart’s Mathematician’s Lament outlined how we introduce math to students in the wrong way. Measurement explains how math should be done. With plain English and pictures, he makes complex ideas about shape and motion intuitive and graspable, and offers a solution to math phobia by introducing us to math as an artful way of thinking and living. |

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### Contents

Length areaandvolume | |

Time and Space Containingsomethoughts on mathematical motion Coordinate | |

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algebraic angle approximations beautiful choose circle circular coordinate circular motion circumference cone conic sections constant coordinate system corresponding cosine course crosssections curve cycloid cylinder depend describe diagonal differential calculus differential equation dilation dimension direction disk distance ellipse equal example fact focal points focal property geometric going happens height horizontal hyperbola idea imaginary imagine isometries isthat isthe Leibniz length Let’s logarithm mathematical reality mathematicians means measure method of exhaustion moving point multiplied natural logarithm nice object ofthe onedimensional onethird parabola particular path pattern perimeter perpendicular plane polygon position number precise pretty problem projection pyramid Pythagorean theorem question radius rectangle rectangular relationship right triangle rotate shape sides simply sine and cosine slanted slantedness slice socalled space spacetime speed sphere spirograph stick straight suppose symmetrical thatthe there’s thing threedimensional tobe tothe uniform circular motion unit variables velocity vector vertical volume we’re wecan zero