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K-1: The Senses

Author(s): Barbara Tharp, MS, Michael Vu, MS, Delinda Mock, BA, Christopher Burnett, BA, and Nancy Moreno, PhD.

What Do Your Eyes Look Like?

Procedure: Part 2

Have students work in pairs. Direct students first to observe their own eyes with a mirror, and draw and label what they observe in their science notebooks.

Have students observe their partner’s eye and then discuss ways in which their eyes are similar and different. Students should consider variables such as color, shape, size, etc. 

Ask, Do all eyes have the same parts? Use either a diagram of the eye or draw a picture on the board. Point to the different parts of an eye and ask students which parts they were able to see. [Students will be able to observe the iris and pupil, and will notice their eyelids and eyelashes, which protect the eyes. It is not necessary or important for students to know the names for the parts, just to know that they exist.] 

Tell students they are going to look at their eyes again and identify the iris and pupil. Explain that the circular colored part (membrane) is the iris. It regulates the amount of light entering the eye by adjusting the size of the pupil. The black circle in the center of the eye is the pupil. It contracts (gets smaller) when exposed to strong light or focusing on a near object, and dilates (enlarges) when in the dark or focusing on a distant object. Explain that light enters the eye through the pupil, similar to the way light entered the kaleidoscope through the end of the paper tube.

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