Math Anxiety

Here is a timely essay about an affliction that is way too prevalent and perhaps approaching epidemic proportions. There is also an interactive quiz at the end of the article. Your thoughts?

How many squares? How old are the kids?

Your comments (use "Name/URL" from drop-down menu; e.g. XY/www.iona.edu) to this posting should include the numerical answer(s) along with an explanation. 

Puzzle source - McGraw Hill Education.

Puzzle source - GoHighBrow.com.