The Journal of the Operational Research Society, Vol. 50, No. 6 (Jun., 1999), pp. 581-595 (15 pages) This paper is aimed at researchers and practitioners in ...

Is 10+10+5 greater than, equal to, or less than 40-10? Today, Mr. Joel Lookadoo will show us how to solve challenging math problems like these by using number lines and pictures! Rise and Shine is ...

Naomi Pacheco was making dinner when her 10-year-old daughter, Rhythm, suddenly called her over to see her math homework. Like most parents, the Utah resident is used to helping her child troubleshoot ...