The rods help you see black and white and the cones help you see colors. The sclera is a tough skin that covers the eyeball. Sclera: also known as the “white of the eye”. Lens: works with the retina to ensure that the image the eye sees is clear. The cornea does not contain blood vessels. When the light is dim/ dull, the pupil is big.Ĭornea: clear skin that covers the front of the eye. When the light is bright, the pupil is small. The pupil allows the light to enter the eye. The iris controls the light that enters the eye.Īnterior Chamber: located between the iris and the cornea’s innermost surface. When looking at something close, the muscles will squeeze and the lens will become bigger. When looking at something that is far away, the muscles will relax and the lens will become smaller. Each part’s function will be explained.Ĭiliary Body: muscles of the eye that squeeze and relax. From this activity, the students will learn about the parts of the eye that are not visible. Students should write the name of each part on the line as it is explained. If it is possible, project the “Diagram of the Human Eye” onto the board using a projector or put into a PowerPoint document and project so that the teacher can point to the parts of the eye while they explain. The teacher should also explain the function of eyelashes and eyebrows to the students.Įyelashes: help keep dust and dirt out of your eyes.Įyebrow: help keep sweat, dust, and dirt out o your eyes.Īfter the discussion, the teacher will hand out the “Diagram of the Human Eye” worksheet. The teacher will lead a class discussion about the activity, asking questions about what the students observed. The students will engage in this activity for about 10 minutes before reconvening at their desks. Encourage the students to talk about what thye see with their group. The students will point out the different parts of the eye that are visible (i.e., eyelashes, pupil, iris). The students will be instructed to look at their eyes in the mirror. The lesson will start out with the students breaking into groups of three. How will the learning of this content be facilitated? The role of rods and cones and how they create an electrical message and transmit it to the brain for understanding.ĭifferent types of eye problems and how they affect a person’s sight. To reach the lesson’s objectives, the students need to understand: What is the most important content in this lesson? “Vision Disorders” observation worksheet. Mirrors (enough for students to work in groups of 3) Materials and Free Resources to Download for this Lesson: What do you know about your eyes and your sense of sight? How will students’ prior knowledge be activated? Prepare the Learner: Activating Prior Knowledge When someone asks you, “What color is that?” How do you know what to tell them? Students will be able to describe different eye problems and the effect each has on a person’s sight. Students will be able to explain how the eyes differentiate color. The students will be able to describe how the eyes and the brain work together. Students will be able to describe parts of the eye.
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