Belgrade, “Nadežda Petrović” primary school, 2013

(44° 49′ 508″ N,  20° 24′ 22″ E)

Fig. 1. A typical school sundial: a bar aimed at the North Star and a semi-circular dial

• art,
• desing,
• dialing,
• gnomon,
• gnomonics,
• hour,
• numbers,
• photo,
• science,
• shadow,
• sun,
• sundial,
• time