This is  quite an interesting topic.  I realized that it is hard to define STEAM in only 12 words.  Many words come to mind including integration, innovation, collaboration, differentiation, equity, inclusion using multiple intelligences.  Constructivism includes  inquiry-based learning that also includes project- and problem-based learning, self-regulated learning and the overarching worldview of dialectical pragmatism.  This means that there are multiple views and if it works, it can be used to ensure that through the different methodologies, analyses and reflection, reasonable conclusions can be arrived at. STEAM helps learners to not only acqire knowledge, but helps develop positive attitudes through successful experiences.  This then includes the humanistic approach and the fact that learning is life-long and can be satisfying and not just obligatory.

The topic of the Trebuchet which can be looked at from and educational, cultural, historical, political or pedagogical point of view shows that indeed STEAM involves the entire curriculum, multiple topics that can be integrated in innovative way.  I note that the STEAM point of view involves the following

Science – Calculation of force, distance, friction, inclusion of a motor (Physics), composition of material thrown, like rocks, clods of dirt, metal (Chemistry)

Technology – not just for research purposes but could be incorporated in a computerized motor

Engineering – actual optimum design of the Trebuchet

Art – use of colours to camouflage the Trebuchet, artistic design in order to fit into the background and so be undetected

Mathematics – formulae to calculate the force multiplied, distance travelled, optimum size of ‘cannons’