OurStory: Life on the Water Lenses and Lighthouses
Teacher Guide, page 1 of 4
Read the Directions sheets for step-by-step instructions.
In this activity, students will examine a lighthouse lens to develop an understanding of how some lighthouse lenses work in the context of a specific example. Students will then apply their knowledge of the lighthouse lens technology to imagine a new invention using a lighthouse lens to complete a dierent task.
Careful observation is critical to everyday life and academic research in any field because it allows individuals to gather all of the information that is available from a resource. The information gathered from observation can then be used in higher-level thinking processes, such as application, analysis, synthesis, and evaluation.
OBJECTIVES The students will be better able to:
Describe how a Fresnel lens works.
Observe carefully and describe in detail.
AGE GROUP: K–4
canal: a human-made waterway dug across land
Fresnel: the last name of an inventor (pronounced “Fray-nell”). The lens he invented is called a Fresnel lens.
lens: a piece of see-through material (like glass) that focuses rays of light
lighthouse: a structure, often a tower on land or in the water, with a powerful light that gives a signal to guide seafarers
magnifier: a lens or combination of lenses that makes something appear larger
maritime: of, relating to, or bordering a body of water