19-24 months

Locomotion:

At this age, your toddler is running forward for 10 feet. He is able to walk sideways for 10 feet leading with the same foot. He is able to walk with one foot on a line for 6 feet. He is able to jump forward 4 inches without falling. With feet together, he is able to jump up 2 inches. He jumps down 1 step without assistance (1 foot may lead). He is able to walk up 4 steps without support (may place 1 or both feet on each step).

Object manipulation:

Your toddler is able to kick a ball 3 feet forward. He throws a small ball overhand 3 feet forward before it touches the floor. He is able to throw a small ball underhand 3 feet forward before it touches the floor.