Moment of Peril: Lesson Presentation Procedures [answer]. Havis, L. Montessori Observer, 21(1):3, March, 2000.
bibtex   
@article{havis_moment_2000-2,
	title = {Moment of {Peril}: {Lesson} {Presentation} {Procedures} [answer]},
	volume = {21},
	language = {eng},
	number = {1},
	journal = {Montessori Observer},
	author = {Havis, Lee},
	month = mar,
	year = {2000},
	pages = {3}
}

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