Whirling Watcher


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In this activity, you'll make a stroboscope--a spinning disk with slits around the edge that you'll look through. Brief but frequent glimpses of images seen through the slits lead to a surprising result, which teaches students about vision and the human nervous system. The activity includes three short online videos: Introduction, Step-by-Step Instructions, and What's Going On. Also available: a concept map and a "Going Further" document that suggests variations on this activity.

Learning Registry Activity


    Topics and Grades

    Grade: TK/K to 9

    Topics: Structure and Function in Living Things, Life Sciences, Human Anatomy & Physiology

    Resource Pedagogy

    Resource Type/Classification:

    • Teacher Materials

    Tool for: Students