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- Have the students understand what a cycle is and how something changes/moves through the biosphere.
- The students will be able to make connections from all the activities to understand that all the cycles are connected in some way, directly or indirectly.
- Day 1-4: Early Earth activities.
- Day 5: Nitrogen Cycle activities.
- Day 6-8: Introduction to Carbon, Oxygen, Photosynthesis and Photosynthesis Lab.
- Day 8-9: Carbon Cycle activities.
- Day 10: Wrap up and review of unit.
- This unit was designed to target the earth science standards in biogeochemical cycles, standard 7, in the 9th grade earth science classroom.
- The students are provided with a review packet that will aid them in identifying the key concepts learned in the unit.
- A unit exam was given to the students that required one 55 min class period.
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- These activities were designed to occur over 4 days with one lab activity, one online activity and a few short lectures.
- All the activities were designed for a 55 min class period.
- The Early Earth Activities are designed to help the students understand how different Earth's atmosphere and environment were compared to what the current atmosphere and environment.
- The activities on the Nitrogen and Carbon cycles were designed to occur over 3 days with three separate activities on each day.
- All the activities were designed for a 55 min class period.
- The activities were designed to teach the students about cycles and to introduce the idea that all cycles are connected in some way even though each cycle is often examined separately.
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- This introductory lesson is a power point presentation that will require one 55 min class period.
- Students are advised to take notes for all the slides with green titles.
- This lesson is broken up by one demonstration and several posed questions.
- After the lecture a description of the procedures for the photosynthesis lab occurred. This is ideal as there is little time to describe lab procedure during the lab.
- The activities on the Nitrogen and Carbon cycles were designed to occur over 3 days with three separate activities on each day.
- All the activities were designed for a 55 min class period.
- The activities were designed to teach the students about cycles and to introduce the idea that all cycles are connected in some way even though each cycle is often examined separately.
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Hot Spring
Effects of Photosynthesis
Test Tubes
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- Grade Level: 9th grade earth science classroom.
- Time Frame: 2-2½ weeks
- Objective: Teach high school students about biogeochemical cycles and how they have changed over Earth’s history.
- California Science Standard 7: "Each element on Earth moves among reservoirs, which exist in the solid earth, in oceans, in the atmosphere, and within and among organisms as part of biogeochemical cycles."
- California Science Standard 1C: "Students know the evidence from geological studies of Earth and other planets suggest that the early Earth was very different from Earth today."
- California Science Standard 4B: "Students know the fate of incoming solar radiation in terms of reflection, absorption, and photosynthesis."
- California Science Standard 8B: "Students know how the composition of Earth’s atmosphere has evolved over geologic time and know the effect of outgassing, the variations of carbon dioxide concentration, and the origin of atmospheric oxygen."
- Investigation and experimentation standards 1A: "Select and use appropriate tools and technology (such as computer-linked probes, spreadsheets, and graphing calculators) to perform tests, collect data, analyze relationships, and display data."
- Investigation and experimentation standards 1D: "Formulate explanations by using logic and evidence."
- Investigation and experimentation standards 1L: "Analyze situations and solve problems that require combining and applying concepts from more than one area of science."
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SIO Cafe
Scripps Pier
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Design EarthRef.org
Sponsored by NSF and NSDL
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