We talk about merle a lot in this handout, so it seemed. like a good idea to explain what it is (and isnât). The. most important thing to remember is that merle is a. color pattern, not a color by itself. Merle dogs can. come in a variety of colors. The most.
Two years: Toddlers begin walking up and down stairs using a non-alternating stepping pattern with hand held or rail assistance. Three years: Children begin walking up the stairs using an alternating stepping pattern without the handrail and down stairs using a non-alternating stepping pattern. Four years: Children begin walk up and down the stairs using an alternating stepping pattern without support.
Parents should supervise children during this period because babies and toddlers are unaware of the risks of falling while climbing. Stair Climbing. Stairs are difficult for children to master. Babies as young as 6 months old may try to crawl up stairs, but are typically not coordinated enough to do so without falling. When children have been walking competently for a few months -- usually at about 15 or 16 months old -- they can walk up stairs with adult assistance. They then progress to walking up stairs using handrails at about 2 years of age. The final stage in this development is the ability to climb down stairs without assistance.