| • GRADE: 7+
| • TOPICS: architecture, civil engineering, construction, smart cities
| • MATH: angles
| • SCIENCE: light reflection, optics, renewable energy, solar energy

| • 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) i...