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Inhale. Exhale. Breathe easy with this richly-designed lesson plan on the source of our oxygen! Children may be surprised to find out that plankton produce the bulk of the vital gas. They participate in an activity where they record the number of breaths that they take in 30 seconds and then compute how many taken in larger time spans. They then calculate how much of those breaths are provided by the plankton. The activity closes with a creative activity in which individuals design a t-shirt or bumper sticker that encourages the public to take care of the oceans. This is a pertinent activity for early environmentalists or during a natural resources unit.
- A variety of activities keeps learners engaged