age appropriate tantrums?

i'm still not a full believer that they are tantrums and not just creative ways of expression.  here's an example of what jake does when something is taken away or he doesn't want to do something.  1) sit down hard on his butt (look at us) 2)throw himself back on his elbows (look at us) 3) let elbows go and fall on shoulders (look at us) 5)hit head on the floor softly but enough to make a noise (look at us).  can it be defined as a tantrum if it's strategically broken down into 4 steps and no crying or screaming is involved?  

my age appropriate tantrum creative expressionist...