spiraling
n.— «Also, instead of spending weeks on a particular math lesson, students are introduced to the concepts for a few days and revisit them later. This technique, called “spiraling,” is designed to help students build on their problem-solving skills so they can retain information over the long-term and improve test scores.» —“Everyday math puts teachers on the spot during training” by Liz Mitchell Beaufort Gazette (South Carolina) June 24, 2008. (source: Double-Tongued Dictionary)
Further reading
Amid court-ordered busing in the 1970s, a middle-school teacher tried to distract her nervous students on the first day of class with this strange assignment: find a monarch caterpillar. The result? A memorable lesson in the miracle of metamorphosis...
There was a time when William Shakespeare was just another little seven-year-old in school. Classes in his day were demanding — and all in Latin. A new book argues that this rigorous curriculum actually nurtured the creativity that later flourished...