From the linked article:
When construction comes back, skilled workers will be needed to replace those pushed into early retirement by the long slump. But many young people don’t have the math skills to learn construction jobs, contractors fear.
And construction is all about math. Everything from carpentry and brickwork to grading and sloping involves math.
Construction veterans are shocked at how few graduating students have functional math abilities. That’s why associations and contractors are trying to teach applied math skills