Observing the Heavens (Telescopes)

After viewing the Observing the Heavens (Telescopes) Video, students will build their own telescope and use it to observe objects around them, including the moon at night. Students will use geometric optics to derive the thin lens formula and determine the relationship between focal length and magnification. Discussion will explore the impact of the telescope on our understanding of the world around us and our place within it.

SUBJECTS Physics

GRADES 8–12

TIME REQUIRED Two to three class periods (100–150 minutes)

LEARNING OBJECTIVES

Students will build their own telescope and use it to observe objects around them, including the moon at night.
Students will use geometric optics to derive the thin lens formula and determine the relationship between focal length and magnification.
Students will use critical thinking and communications skills to reflect upon and discuss the impact of the telescope on our understanding of the world around us and our place within it.

MATERIALS

Telescope Kit (these may be purchased from online science education supply stores)
– Two cardboard tubes
– Convex lens (objective lens)
– Eyepiece

ESTABLISHING GROUP NORMS
FOR DISCUSSION STANDARDS ALIGNMENT

FIND MORE VIDEO CONTENT:

Program Episodes • Trailers & Promos • Lesson Plan Videos • Video Shorts

Lesson Implementation Materials

Because these Lessons follow a unique format, it is important to review the TEACHER GUIDE before implementing the activity.

Begin the lesson by viewing the 9-min Observing the Heavens (Telescopes) LESSON VIDEO from the SEARCHING series as a class. Note: If your class has recently implemented a SEARCHING Lesson, you can skip the video introduction and begin the video at minute 03:45.
Download and print the LESSON INTRODUCTION. Students (and teachers) should read this before starting the activity.
Download and print the STUDENT WORKSHEETS. (PDF) (DOC)

Download TEACHER GUIDE (PDF)

Download LESSON INTRODUCTION (PDF)

Download STUDENTS WORKSHEET (PDF) (DOC)