Cette leçon contient 11 diapositives, avec quiz interactifs, diapositives de texte et 1 vidéo.
La durée de la leçon est: 45 min
Introduction
Lesson Four – How does trash reach foreign shores?
This lesson discusses how trash can reach distant countries.
Learning activities:
Research and discussion exercises on where the trash you drop could end up.
This lesson is provided by Sea Shepherd. Sea Shepherd is a marine conservation organisation with a mission to protect the ocean and marine wildlife. Sea Shepherd works globally on a range of issues impacting the ocean, running numerous direct action campaigns each year. Ocean pollution is one area Sea Shepherd is addressing in order to protect marine wildlife.
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Slide 2 - Diapositive
During the lesson we will use these icons to identify the learning actions.
How does trash find its way to foreign shores?
Slide 3 - Carte mentale
Ask students “Reflecting on our discussion about ocean currents and gyres. How would trash find its way to a distant country?”
Over 100 million tons of fish caught each year.
How trash moves around the ocean.
Slide 4 - Diapositive
Use the image to show how trash is moved around the ocean. The North Pacific gyre is one of the worst with thousands of square kilometers of rubbish. It’s hard to estimate the size because much of the rubbish is floating just below the surface.
Introduction to IUU fishing and the impact of overfishing.
How does weather impact currents?
Slide 5 - Diapositive
Ask students how weather might impact currents. Big weather events like hurricanes and cyclones can change the movement of currents and push anything caught up in It toward shores.
What are the impacts of trash moving around the ocean?
Slide 6 - Carte mentale
Ask students “What do you think are the impacts of trash moving around the ocean?”
Introduction to IUU fishing and the impact of overfishing.
What are the impacts on marine wildlife?
Slide 7 - Diapositive
Ask students “What is the impact on marine wildlife of trash moving around the ocean?”
Slide 8 - Carte
This map shows the location of Cocos Keeling Islands. Explain the currents and gyre location to it.
Slide 9 - Vidéo
This video (9 min) shows the extent of plastic pollution washing up on this remote Australian atoll and Sea Shepherd’s efforts to clean it: https://www.youtube.com/watch?v=KfBK7HwgvFM&t=243s