Answer :
Final answer:
The height of a spring rocker's seat for preschoolers should be determined based on the children's height and ability to balance and propel themselves, considering that preschoolers are typically 105 to 114 cm tall and extremely active.
Explanation:
Appropriate Seat Height for Preschoolers on Spring Rockers
The question regarding the suitable seat height for preschoolers on spring rockers touches on the subject of health and safety in playground equipment standards. When we consider the physical development of preschoolers, by the time children are four to five years old, they are quite active, with the ability to climb ladders and navigate playground equipment efficiently. Their growth rate, however, has slowed down significantly compared to their initial years, gaining about 1.8 to 2.7 kg (4 to 6 lb.) annually and growing approximately 5.1 to 7.6 cm (2 to 3 in.) each year.
By age five, most children weigh between 16.5 and 20.3 kg (36.3 and 44.7 lb.) and stand roughly 105 to 114 cm (41.3 to 44.9 in.) tall. Considering their size and abilities, the seat of a spring rocker for preschoolers should be set at a height that allows their feet to touch the ground comfortably for balancing and propulsion, yet not too low that it hampers their ability to climb on and off easily. While specific measurements are not provided in the question, it's reasonable to infer that the seat height should accommodate the typical height of preschoolers while ensuring safe and enjoyable play.
