1. Kendall Bird
EXPW 3410-001
12/1/16
Motor Development Videos
I chose to assess the boy who is in the third video of each section. He is wearing Red
shorts and a blue shirt. The first video that I viewed was the running one. In this I would place
the boy into stage three. The first reason was that the arms are carried slightly below waist level
and used to propel the body instead of balance. The confirmation for stage three was when I
paused the video and noticed that his swinging leg flexed right around 90 degrees. He also
connected with the ground heel to toe for the most part.
The second video was the same boy, and in this one he is hopping. This is done on one
leg and requires much greater balance to keep it going and not topple over. I would place him
into the stage two. I came to this conclusion because of many factors. First, the non-support leg
swings close to the buttocks and then far out in front towards the end. Next, there is a slight
forward lean from the hips that helps progress the child forward. When landing the hips flex and
the support knee does too. This all partnered with the aggressive arm swinging movements and
lack of balance leads me to Stage 2.
The next video is of jumping horizontally. In this video the boy is stage two. The arms
move anterior-posterior but they do not go far enough back to produce great power. The arms
never actually pass his torso. The angle of takeoff is above 45 degrees. The flight phase is his
best phase, as he reaches straight up and almost fully extends his body. Upon landing his thighs

2. are close to parallel with the floor. The absorption of the jump is done well as his legs and butt
almost sit down onto the ground. The landing was better than the takeoff in this skill.
The final video to watch is the one on skipping. In this skill I would say the boy is in
stage two. I believe it is the stage due to a few things. There is no double hop present, and thus a
good rhythmical pattern. There is no stopping to regain focus needed. The arms move bilaterally
for the most part. If it were stage three, then the arms would move opposite of each other. There
is a slight attempt to move them opposite, but for the most part the arms move forward and back
at the same time. The last indication is that the feet land with heel contact first, which helps to
propel to the next hop. The boy is in stage two in every skill except for running. This makes
sense as running is easier than the other skills. The skills require a little tweaking to move onto
the next stage, and for some it’s as simple as fixing the start for jumping, for example. Overall,
the boy’s progressions are pretty normal.