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This activity is designed to let learners measure their reaction time or response time to something they see.

This is a quick and simple demonstration about reflexes (fourth activity on the page). One learner stands behind a see-through barrier like a window or wire screen.

This is a quick and simple demonstration about reflexes (second activity on the page).

In this quick and simple activity about reflexes (at the top of the webpage), learners conduct a simple test to explore pupillary response.