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Grades: 4-6
Duration: 120 minutes
Teach photosynthesis before using this lesson. It will give students better context.
This Prezi presentation is based partially on a lesson from National Geographic’s “Save the Plankton, Breathe Freely.”
https://www.nationalgeographic.org/activity/save-the-plankton-breathe-freely/
Consult the lesson plan to guide you through the lesson with your students. Other resources in the lesson come from NASA and Science Focus. Adapt the lesson in ways you see fit!
Standards: CCSS RST.6-8.1; WHST.6-8.2
NGSS MSLS 1-6
For one minute, calm our minds and bodies. Close your eyes.
Breathe in for 15 seconds.
Breathe out for 15 seconds.
Why do we do this?
And what are we breathing in?
Oxygen only makes up about 21% of air. About 78% of the air you breathe is made up of another gas called nitrogen.
There are also tiny amounts of other gases like argon, carbon dioxide, and methane.
Plant and animal life on earth can’t survive without air. We need to breathe in oxygen. We need it to live. We breathe out carbon dioxide.
Let’s make sense of this graphic. What is it telling us?
Carbon dioxide (CO2)
Oxygen (O2)
Light
(CO2)
(O2)
Food
Blood
Photosynthesis
Produces
Oxygen + Sugar
Energy + Water + Carbon dioxide
We need plants for two things:
Food which we eat
Oxygen which we breathe in
When we breathe in oxygen, it enters our blood. And then our blood releases carbon dioxide, which is in turn what plants need to live as part of photosynthesis. It’s a beneficial loop for both humans and plants.
But what type of plant does most of our planet's oxygen come from?
Take 30 seconds to think on this.
Close your eyes. Breathe in and out.
Now talk to a partner about what they think!
Share your ideas!
Trees also make up a good portion of the oxygen produced on Earth (15-20%).
Get into groups of three.
Assign roles: timer, breather, and data recorder.
Measure and record the number of breaths taken in 30 seconds.
Use the Breath Calculations Sheet to independently figure out how many breaths you take in a day come from a type of phytoplankton called Prochlorococcus.
Use the Breathe Freely data sheet to guide your calculations!
https://www.nationalgeographic.org/activity/save-the-plankton-breathe-freely/
https://www.nationalgeographic.org/media/plankton-revealed/
As you watch, take notes on two facts and one question you have after watching the video.
http://www.ascd.org/publications/books/118045/chapters/The-Fab-Four@-Reciprocal-Teaching-Strategies.aspx
Gather ten more facts from your readings and develop at least one question from each of the articles.
Read
https://www.ecology.com/2011/09/12/important-organism/
https://www.nationalgeographic.com/news/2004/6/source-of-half-earth-s-oxygen-gets-little-credit/
https://earthobservatory.nasa.gov/features/Phytoplankton
What do you notice? What do you think is happening in these photos? What is the story?
http://wwf.panda.org/our_work/forests/deforestation_fronts2/
Forests are being coverted for other land uses.
For instance, land is being cleared for plantations to grow pulp, palm, and soy, as well as for pastures for cows.
https://wwf.panda.org/our_work/forests/deforestation_causes2/forest_conversion/
Corporations are also logging all types of forests for hardwood.
Mining is also taking place, in which huge plots of land are dug up for metals.
How business have responded to the use of palm oil.
http://palmoilscorecard.panda.org/
http://www.ascd.org/publications/books/118045/chapters/The-Fab-Four@-Reciprocal-Teaching-Strategies.aspx
http://encyclopedia.kids.net.au/page/de/Deforestation
https://www.usatoday.com/story/news/world/2019/08/23/amazon-rainforest-fire-international-crisis-emmanuel-macron-says/2093574001/Ω
https://www.nationalgeographic.com/environment/global-warming/deforestation/
https://www.nationalgeographic.com/environment/2019/08/why-amazon-doesnt-produce-20-percent-worlds-oxygen/
https://www.sciencefocus.com/planet-earth/how-many-trees-does-it-take-to-produce-oxygen-for-one-person/
https://www.nytimes.com/video/world/americas/100000006721982/amazon-rainforest-fires-burning.html?action=click>ype=vhs&version=vhs-heading&module=vhs®ion=title-area&cview=true&t=90
Given all tracking of facts and questions you have logged on both plankton and deforestation, pair up and create a PREZI PRESENTATION or VIDEO that illustrates what you have learned. Here are some helpful links to learn how.
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Directions
1. Choose a topic.
2. Find five resources to support your topic.
3. Create a Prezi presentation or video to present your findings and newfound knowledge.
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