ERIC Number: EJ1177909
Record Type: Journal
Publication Date: 2018-Jan
Developing the Concept of a Radian
Wolbert, Roger S.; Moss, Erin R.
Mathematics Teacher, v111 n4 p272-277 Jan 2018
A common goal for mathematics teachers at any grade level is for "all" students--not just future mathematics teachers--to develop deep understanding of the mathematics they are learning and using. To that end, this lesson can be used in an upper-level high school mathematics course to introduce the concept of a radian in a way that encourages student reasoning and reflection. This discovery-based lesson is designed to provide students with opportunities for active engagement and productive struggle as they construct angles and formulate a rich conception of the radian.
Descriptors: High Schools, Thinking Skills, Reflection, Concept Teaching, Geometric Concepts, Teaching Methods, Active Learning, Discovery Learning, Secondary School Mathematics, Mathematics Instruction
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; Guides - Classroom - Teacher
Education Level: High Schools
Authoring Institution: N/A
Grant or Contract Numbers: N/A