MT: December 2009, Volume 103, Issue 5

	Mathematics Teacher December 2009, Volume 103, Issue 5
	Articles

	Mathematics Problems from Ancient Egyptian Papyri Christopher A. Howard
	Mathematical Letter Writing Anderson Norton, Zachary Rutledge, Kareston Hall and Rebecca Norton
	Algebra, Home Mortgages, and Recessions Jean A. Miller Mariner and Richard A. Miller
	Investigating the Randomness of Numbers Kenn L. Pendleton

	Departments
	CALLS FOR MANUSCRIPTS: 2011 Focus Issue: Teaching Geometry
	Sound Off!: The Alliance: Mathematics and the Arts Jeff Suzuki
	Reader Reflections
	Media Clips: Storms and Water Usage; Swine Flu C. C. Edwards and Daniel Muttiah
	CALLS FOR MANUSCRIPTS: Assessment
	Mathematical Lens: Roller Coasters and Railways Sandra Argüelles Daire
	December 2009 Calendar and Solutions to Calendars
	January 2010 Calendar and Solutions to Calendars
	CALLS FOR MANUSCRIPTS: Meeting the Needs of New Teachers
	Technology Tips: Simulation with the TI-Nspire Heidi J. Rudolph
	Delving Deeper: Sizing Up Class Size: A Deeper Classroom Investigation of Central Tendency Lawrence M. Lesser
	CALLS FOR MANUSCRIPTS: Language Learners
	For Your Information: Publications; Products
	The Back Page: My Favorite Lesson: Discovering a Derivative Albert Goetz