This set of sturdy beechwood hourglasses is a great tool for visualizing time for children in preschool, kindergarten, and elementary school. By watching the sand fall, children playfully train their sense of time. It's ideal for brushing their teeth, doing homework, cooking, or keeping track of the time while reading or playing. At 14 cm long, the hourglass is easy for little hands to grasp! Watch the time fly by! This set of hourglasses, with timers for 1, 3, 10, and 30 minutes, trains children's understanding of time and duration and also makes a great visual impression with its high percentage of wood combined with modern colors. It's a real eye-catcher in the classroom or child's room. It has a particularly pleasant feel with rounded shapes.