Light and Optics: Explore Concave and Convex Lenses w/ CER

Light and Optics: Explore Concave and Convex Lenses w/ CER
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  1. Convex lenses can make real images on a screen. It's almost magical to watch in this day where screens are ubiquitous. This is a simple and easy experiment to for kids to start or continue a study of light and optics. Kids will be intrigued by the phenomenon and want to dig into the concepts. Acti
  2. Continue a study of convex and concave lenses seeing how they're alike and different. Which can make real images, which can cast a shadow? These 3 labs will make a great addition to your study of light and optics. Each lab includes cards for Claim, Evidence, and Reasoning (CER) that can be used in
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  1. Twenty four labs to study pinholes, concave and convex lenses, concave and convex mirrors, the human eye, and how telescopes are designed. Most of these labs require no setup and could be used in centers or stations. The directions are written directly to the students so you don't have to introduce
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Bundle Description

Investigating convex lenses is a great place to begin or continue your study of optics. Compare a study of convex and concave lenses seeing how they're alike and different. Which can make real images, which can cast a shadow? Compare convex lenses to pinholes and see how they are similar and different. These are four simple and easy experiments that require little prep. Kids will be intrigued by the phenomena and want to dig into the concepts. The instructions are written to students which frees you from introducing the lab if you prefer. Labs could be used at a station or center as well. The first lab in the series has a student reading. All four labs come with CER (Claim, Evidence, Reasoning) cards that can be used in a variety of ways (instructions for use are included).

Use this to learn and reinforce answers to questions such as:

  • What happens to the image as you move a lens toward a screen?
  • What happens to the image as you move a lens away from a screen?
  • What does it mean for lenses to have a focal point?
  • How do convex and concave lenses differ?
  • What type of lens casts a shadow?
  • What types of lenses are converging and what does that mean?

Once students try this activity, they can capture their observations using the included Lab Notes or probing questions included in the instructions. 

Concepts Addressed

  • Convex lenses can project images onto a screen.
  • The image is only clear at a specific distance from the screen.
  • Convex lenses focus light.
  • Only convex lenses can make real images (cast onto a screen).
  • Focused images occur only at specific distances.
  • Pinholes can act like convex lenses.

Answer Keys and Teacher Notes address most questions and issues that might arise in this study—you shouldn’t have to do any outside research unless you want to.

Materials Needed Votive candle or small light, Assorted convex and concave lenses, Matches or Lighter, Metric measuring tape, Clear lightbulb, Frosted lightbulb, Screen or light wall, Pushpin, Foil, Scissors, Desk lamp, Tape, Cardboard frame.

Prep Needed Gather supplies

Teaching Time   Four 30 min sessions


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Terms of Use
Copyright © Carolyn Balch. All rights reserved by the author. This product is to be used by the original downloader only. Copying for more than one teacher, classroom, department, school, or school system is prohibited. This product may not be distributed or displayed digitally for public view. Failure to comply is a copyright infringement and a violation of the Digital Millennium Copyright Act (DMCA). Clipart and elements found in this PDF are copyrighted and cannot be extracted and used outside of this file without permission or license. Intended for classroom and personal use ONLY.

Total Pages
27 pages
Answer Key
Included
Teaching Duration
2 hours
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