Civil engineer (#1)
Area, circumference, perimeter
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6m 25s
| • GRADE: 7+
| • TOPICS: civil engineering, roadway design, transportation safety
| • MATH: central angle (also: circumference, ratios and proportions, units conversion)
| • SCIENCE: curvilinear motion, centripetal force
The image at 05:55 (File:DBAG Baureihe 612 Neigebetrieb (612-009-1).jpg) is the courtesy of A. Gutwein. Distributed under CC BY-SA 3.0.
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Microbiologist (#1)
| • GRADE: 7+
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| • SCIENCE: bacteriology, E. coli, microbiology -
Water management specialist (#1)
| • GRADE: 6+
| • TOPICS: civil engineering, construction, sustainability, water management, weather and climate
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