ERIC Number: EJ1160278
Record Type: Journal
Publication Date: 2017-Oct
A Student Asks about (-5)!
Goldenberg, E. Paul; Carter, Cynthia J.
Mathematics Teacher, v111 n2 p104-110 Oct 2017
A first-year algebra student's curiosity about factorials of negative numbers became a starting point for an extended discovery lesson into territory not usually explored in secondary school mathematics. In this article, the authors, math teachers in Massachusetts, examine how to solve for factorials of negative numbers and discuss how they taught this concept in their schools.
Descriptors: Algebra, Secondary School Mathematics, Numbers, Mathematics Teachers, Mathematics Instruction, Mathematics, Professional Personnel, Teaching Methods, Mathematical Logic, Equations (Mathematics)
National Council of Teachers of Mathematics. 1906 Association Drive, Reston, VA 20191. Tel: 800-235-7566; Tel: 703-620-9840; Fax: 703-476-2570; e-mail: NCTM@nctm.org; Web site: http://www.nctm.org/publications/mathematics-teacher/
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Secondary Education
Sponsor: National Science Foundation (NSF)
Authoring Institution: N/A
Identifiers - Location: Massachusetts
Grant or Contract Numbers: DRL1119163