ERIC Number: EJ423680
Record Type: CIJE
Publication Date: 1990
Reference Count: 0
Why December 21 Is the Longest Day of the Year.
Mathematics Magazine, v63 n5 p307-11 Dec 1990
Described is a way that elemental mathematics can be applied to explain an astronomical phenomenon. The fact that the extreme of sunrise and sunset do not occur on the shortest or longest days of the year is analyzed using graphs and elementary calculus. (KR)
Publication Type: Journal Articles; Guides - Classroom - Teacher
Education Level: N/A
Audience: Teachers; Practitioners
Authoring Institution: N/A
Note: Journal availability: See SE 547 378.