Liberty Science Center 9th Grade:

 

Animal Adaptations: The Eyes Have It

 

Grade Level: 9th

Learning standard: S2a, S2c, S2e, S2f, S5f, S7a

Time Requirement: approximately the whole school day at the site

Topics Covered by this Lesson: eyespots (ocelli), compound eyes (found in crustaceans and insects), mammalian eyes, color vision, binocular vision

Purpose: the purpose of this visit is to help students understand that animals are well adapted to surviving in their environment, focusing on the adaptation of the eye.

Objective: The objective of the lesson is that “Students will be able to understand and explain the role of the eye in an animal’s survival”. 

Materials Required: a model of the mammalian eye, models of eyes of different types of animals

Learning Prerequisites: Students would have already had a good knowledge of the structure and function of the mammalian eye.

Visit: Students will visit the Liberty Science Center in New Jersey.  Particular attention will be paid to exhibits dealing with environment.  Students will already be in-groups of 5.  One student from each group will be selected to experience the “Touch Tunnel”.  In this tunnel students will crawl around in the dark, using senses other than sight and will report their experiences back to the group.  Care should be taken in selecting the students since some students may be claustrophobic or may not be comfortable with the experience.  Students will spend most of their time examining the exhibits on the 4th floor.  There are many exhibits on this floor pertaining to different types of animals with different types of eyes-for example, sea stars, earthworms, hammerhead sharks, raccoons, crabs, etc.  Particular attention should be pain to the animal’s environment. 

Post Visit:

Homework: Students will randomly select an animal from the selection given by the teacher.  Students will (in-groups of three) do a report on an animal, focusing on how the eyes of the animal allow it to survive in its environment.  Included in the report should be:

Animals may include: dinosaur, raccoon, starfish, owl, penguin, mole, lizard, hippopotamus, seal, spider, eagle, tiger

Extensions: Explain with the help of a diagram, how our stereoscopic vision allows us to see figures more in 3-D that someone who has lost an eye.

Possible Questions:

§       Do all animals see color as we do?

A: No color depends on the three different types of cones and not all animals have those cones.  Animals with simple eyes do not see color at all and some insects see ultraviolet light that we cannot see.

§    Are there animals with better vision than us?

A: Yes, for example an eagle can spot a mouse from hundreds of meters in the air.  Owls have nocturnal vision that allows them to see better at night



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