61. Software for the teaching of geometry
    Help with finding software for lessons for a Geometry class.
    - Date of thread's last activity: 17 May 2006

62. Software for algebra and geometry
    Ideas for using software with struggling high school math students
    - Date of thread's last activity: 10 June 2009

63. Christmas Around the World
    Incorporating math activities in a study of Christmas traditions around the world
    - Date of thread's last activity: 16 November 2007

64. 17-gon with straight-edge and compass
    An explination of Gauss' construction of a heptakaidecagon (17-gon) using a ruler and a compas
    - Date of thread's last activity: 14 October 2009

65. Distance from a point to a line.
    Derivation of formula for finding the distance from a point to a line, given the point and the equation of the line.
    - Date of thread's last activity: 5 April 2002

66. Locus
    Help with understanding how to interpret geometry questions about the locus of points.
    - Date of thread's last activity: 17 September 2004

67. Factoring pairs and factorization
    Ways to incorporate disciplines other than math into the teaching of factoring
    - Date of thread's last activity: 21 September 2006

68. Middle school geometry activity
    Creative Geometry project on developing mini-golf course that incorporates scale drawings.
    - Date of thread's last activity: 4 December 2007

69. Beach theme math lessons
    Connecting mathematics to classroom themes in elementary schools
    - Date of thread's last activity: 16 November 2006

70. Tessellations
    Teaching tessellations to late elementary students
    - Date of thread's last activity: 15 July 2000

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