When a child is born they have no control of thier own muscles this is why they can not sit up as yet. During the first year, babies learn how to sit up, crawl, walk and talk. By age 2 toddlers go through another change and start to learn new things. When a child gets to three years they can hold crayons, kick a ball, build objects, ride a tricycle and jump off a step. Between 3 and 4, they can jump down on the spot, stand on one leg and draw a circle and a cross this would be taught at school.