Summary
In this lesson, students will evaluate and argue the benefits and drawbacks of the use of different types of radiation for technological advances. By the end of this lesson, students will be able to evaluate published works' validity on technology associated with human health. This is a multimodality lesson, which means it includes face-to-face, online, and hybrid versions of the lesson. The attachments also include a downloadable Common Cartridge file, which can be imported into a Learning Management System (LMS) such as Canvas or eKadence. The cartridge includes interactive student activities and the teacher's notes.
Essential Question(s)
How dangerous are electromagnetic waves to humans? Should we be concerned with the new technological advances of today?
Snapshot
Engage
Students create a claim and argue opposing viewpoints.
Explore
Students read an article on gamma rays and create a superhero based on the advantages and disadvantages of a particular ray.
Explain
Students read an article about the electromagnetic spectrum and identify key components of electromagnetic radiation (EMR).
Extend
Students explore the job of a Director of Medical Imaging in relation to electromagnetic radiation.
Evaluate
Students assess their level of understanding and determine the validity of published work on electromagnetic radiation in association with human health.
Instructional Formats
The term "Multimodality" refers to the ability of a lesson to be offered in more than one modality (i.e. face-to-face, online, blended). This lesson has been designed to be offered in multiple formats, while still meeting the same standards and learning objectives. Though fundamentally the same lesson, you will notice that the different modalities may require the lesson to be approached differently. Select the modality that you are interested in to be taken to the section of the course designed for that form of instruction.
Materials
Lesson Slides (attached)
C.E.R. (attached; one per student)
Electromagnetic Radiation Superheroes (attached; one per student)
Electromagnetic Radiation Notes (attached; print two-sided; one per student)
Laptop or tablet (one per student)
Engage
30 Minute(s)
Use the attached Lesson Slides to follow along with the lesson. Display with slide 3 and read the essential questions aloud:
How dangerous are electromagnetic waves to humans?
Should we be concerned with the new technological advances of today?
Then, move to slide 4 and read the learning objectives:
Move to slide 5 and invite students to participate in the C.E.R.T.I.fy Your Thinking strategy. Pass out copies of the C.E.R. handout to each student. Inform students that they will create a claim to the following prompt: Do you believe the radiation emitted by cell phones can cause harm to the human body? After they have made their claim, direct them to research 3 points of evidence to support their claim and cite where they got their evidence.
Once they have made their claim and collected their evidence, display slide 6 and split the room into two sections, and have students move to the side of "does cause harm" or "does not cause harm." Next, have them debate over the topic. The process for facilitating a debate is listed below. After the debate, have students return to their seats to come up with their comprehensive reasoning.
Explore
40 Minute(s)
Move to slide 7–8, Inform students that they will be creating comic superheroes based on the seven types of electromagnetic waves. Pass out the Electromagnetic Radiation Superheroes and Electromagnetic Radiation Notes handout. Place students into groups of seven and have them divide the seven rays among the group. Each group member should:
Create a superhero associated with the ray that you choose.
Define what is that ray’s superpower and how much energy the superpower produces.
Determine if this superpower can be harmful or helpful to living organisms (animals, plants, fungi, bacteria) and how?
Review all of the group's drawings and record each ray’s definition, advantages, and disadvantages on side A of the Electromagnetic Radiation Notes handout.
After completion of their notes, have students organize their group’s superheroes from least harmful (longer wavelength) to most harmful (shorter wavelength).
The seven rays students should illustrate are:
Non-ionizing: Radio, microwave, infrared, visible light,
Ionizing: UV, X-ray, Gamma
Extend
20 Minute(s)
Move to slide 10 and Inform students: "Today, we are going to learn about a profession that involves electromagnetic radiation on a daily basis. We are going to meet Mrs. Ashley Benard, a Director of Medical Imaging and Radiology Teacher."
Ask students to consider the advantages and disadvantages they may learn about electromagnetic radiation, the type of technology discussed that they use in their line of work. Additionally, alert students to be prepared to answer two questions posed at the end of the video.
“Do you believe that we have become more dependent on the technology that surrounds us every day?”
“Is it adding value to our lives physically, mentally, and emotionally? If so, how?”
Start the Career-Forcused-Director of Medical Imaging for Community Health Centers, Inc with Ashley Benard interview on the slide.
Explain
20 Minute(s)
Move group to group and have students explain how they organized their superheroes from least to most harmful. Use these conversations to address misconceptions and guide students in making any needed corrections to their notes.
Move to slide 9, direct students to the CK-12 Foundations article 20.3 Electromagnetic Spectrum using the QR code or short link on the slide. Inform students that they will read the article and complete the questions on side B of their Electromagnetic Radiation Notes handout.
Evaluate
25 Minute(s)
Go to slide 11. Invite students to complete the Fist to Five strategy to help them self-evaluate their mastery of the objectives. Complete this strategy for slides 12–15.
Next, move to slide 16. Have students recall the claim about cell phones that they made at the beginning of the lesson. Inform learners to keep their claim in mind as they view two opposing viewpoints on the topic. Have learners read the Electro Schematics’ Mobile Cell Phone Radiation article.
Move to slide 17 and invite students to watch Veritasium’s "Do Cell Phones Cause Brain Tumors?" video.
Finally, go to slide 18 and have learners write 1–2 paragraphs answering the following questions:
Does the radiation emitted by cell phones cause harm to the human body? Why or why not use evidence from the activities completed for this lesson?
Do you believe the resources you found for your C.E.R. at the beginning were reliable sources based on what you have learned? Why or why not?
Have students share their thoughts.
Resources
C-K12 Foundation. (2012, December 14). Electromagnetic Spectrum. https://www.ck12.org/book/ck-12-physical-science-for-middle-school/r1/section/20.3/
Free Mobile screen recorder app for Android & IOS. Loom. (n.d.). https://www.loom.com/mobile
K20 Center. (2021, May 10). ICAP - Call Me...Maybe?. YouTube. https://www.youtube.com/watch?v=7kW5Lb89nqU
K20 Center. (n.d.). Fist to Five. Strategies. https://learn.k20center.ou.edu/strategy/68
K20 Center. (n.d.). Gallery Walk. Strategies. https://learn.k20center.ou.edu/strategy/118
K20 Center. (n.d.-b). Intro to AwwApp. YouTube. https://youtu.be/A_9ZFL5HWdI
K20 Center. (n.d.). Mentimeter. Tech Tools. https://learn.k20center.ou.edu/tech-tool/645
K20 Center. (n.d.). Google Drawings. Tech Tools. https://learn.k20center.ou.edu/tech-tool/629
K20 Center. (n.d.). Screencastify. Tech Tools. https://learn.k20center.ou.edu/tech-tool/670
Mohan Kumar, D. (2014, January 05). Mobile cell phone radiation. https://www.electroschematics.com/mobile-phone-radiation/
One platform to connect. Zoom. (n.d.). https://zoom.us/
Sketch, brainstorm and share your ideas. no sign-up required. Whiteboard for Online Collaboration | Web Whiteboard. (n.d.). https://webwhiteboard.com/
TechSmith. (n.d.). Camtasia online – free web-based Screen Recorder. Camtasia. https://camtasia.techsmith.com/
Veritasium. (2015, February 03). Do cell phones cause brain tumors? YouTube. https://www.youtube.com/watch?v=wU5XkhUGzBs