The Sun and Its Galactic Journey for High School Astronomy
A slide-deck presentation (roughly 15-20 slides with speaker notes and supporting NASA imagery) that walks 11th-12th grade astronomy students through what the Sun is, its layers and influences on Earth, the heliocentric versus geocentric models, and its motion within the Milky Way. It builds quantitative reasoning about scale, orbital speed, and the timekeeping links to days, years, and leap years, and it is designed for whole-class lecture with large, distance-readable fonts.