Solving puzzles such as magic squares leads to uncovering the general structure of a problem type. There are properties that are true of all magic squares that can be unpacked. At first glance they are simple, but their beauty is in the complexities of understanding how it is that they “work".
When we change one number in the magic square, that affects the row and the column and ultimately the rest of that SYSTEM. We can use that property to make a point about system thinking. We can't solve the magic square cell by cell, but have to consider it as a whole. Likewise, rivers, rains, and the weather are systems that have many components all affecting one another.
Ying demonstrates for readers the qualities that are required for engineers and designers, such as perseverance and being intellectually brave. Young children can also start their STEM journeys with puzzles. The beauty and challenge of problem solving will help them develop lifelong skills necessary in the STEM fields.