Lesson Plans
Level:
-
9/10 Grade Academic Biology
Topic:
-
Electromagnetic Spectrum and energy
Mode:
Message to the Teacher:
-
As part of most science curriculum,
it is inevitable that we try to include
electromagnetic spectrum somewhere along the way. As the topic can be
very dry,
why not spruce it up by making a relevant connection with your
students. There
are many fascinating ways to deliver the concepts related to the EM
spectrum.
By including real life and relevant topics such as the one proposed
here,
students interests will increase which in turn will make your job
easier.
Objectives:
-
Identify the 7 regions of the
electromagnetic spectrum
-
Explain how and why sunblock works
-
Identify the molecular differences
between sunscreen and sunblocks
Materials:
-
Classroom set of computers
Lesson:
-
This lesson is geared toward opening
the lines of discussion about various
topics within the electromagnetic spectrum. The teacher will act as a
facilitator to help students with their individual needs. The students
will be
working individually through the mode of active learner using
a web quest
as the guide through this site. Once the web quest is complete and
depending on
your time and equipment, you may want to delve in deeper using
spectroscopy of
solutions using a spec 20
Do Now:
-
Students can identify what they know
about light and energy related to
light in a list
Instruction:
-
Teacher discuss the students answers,
(aka prior knowledge) about light and
energy
-
Teacher hands students Web Quest for
them to search and discover
-
Teacher facilitates students as needed
Guided Practice:
-
Each student works independently to
answer the questions asked on the Web
Quest
Review and Reteach:
-
Teacher checks that each student
completed Web Quest worksheet
-
Teacher reviews students answers and
uses them to spring board for a more
in-depth discussion of the EM spectrum for the coming classes
Closure:
-
Teacher hands each student an index
card
-
Students write down 2 concepts or
bits of interesting information that
they were introduced to during the class period
-
Teacher collects and reviews each
card with the class, highlighting
some important points
Worksheets:
Name:
______________________________________
Date: _______________________________________
Sunscreen Chemistry
Web Quest
Direction:
Completely answer the following questions by using
the
website and links to guide you. Once you are complete check your
answers with a
partner and discuss any answers which you did not agree on.
1. Whom and in what year was modern day sunscreen introduced?
2. What is the most common chemical (active ingredient) found
in sunscreen, what does the structure look like?
3. How does sunscreen work? (Be specific, feel free to draw a
picture if
you would like)
4. What types of radiant energy does the sun give off?
5. What is the electromagnetic spectrum?
6. What are the major regions of the electromagnetic spectrum?
7. What is the relationship between the wavelength and frequency of a
wave?
8. What type of radiation is responsible for skin cancers and aging?
9. How much ultra-violet radiation does sand reflect?
10. What are the 3 types of UV radiation? How are they different?
11. Do all forms of UV radiation hit the earth's surface? Why or why
not?
12. Create a T-chart to identify the differences between sunscreen and
sunblock.
13. What does SPF stand for?
14. Would everyone benefit from wearing sunscreen?
15. If I have fair skin and wanted to stay out in the sun for 2 hours,
what
level of SPF should I wear in my sunscreen? What if I had dark skin?
16. What is vitamin D?
17. How is vitamin D related to the topic of the sun and sunscreen?
18. At what layer of the epidermis does the sunlight hit and activate
molecules
to start the synthesis of vitamin D?
19. Name and describe 2 vitamin D deficiencies.
20. How much natural sunlight do you need to synthesis enough
vitamin D
to be healthy?
21. How much vitamin D should a person in the age range of 19-50 get in
their
diets?
22. What are the two types of cancers related to the skin?
23. How many people are diagnosed with skin cancer each year in
the United States?
24. What type of UV radiation damages DNA?
25. In which 2 ways can DNA be damaged?
26. How can we help prevent skin cancers? (Name at least 2)