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.
Child development experts believe that motor activity during the second year is vital to the child's competent development and that few restrictions, except for safety, should be placed on their motoric adventures. By 13 to 18 months, toddlers can move up and down steps and carry toys.