7916 20260205172330.0 POSTER-2026-0039 Vandewiere, Judith Students' understanding of the celestial sphere model and its representations 2025 2025-11-18 NO De Cock, Mieke Sermeus, Jan 7th Shaw-IAU Workshop on Astronomy for Education judith.vandewiere@ksb-orb.be https://astro4edu.org/siw/p275 CPOSTER