Mathematics education seems to be very subject to passing trends – surprisingly more so than many other subjects. The most notorious are, of course, the rise of New Math in the 60s and 70s, and the corresponding backlash against it in the late 70s and 80s. It turns out that mathematics education, at least in the US, is now subject to a new trend, and it doesn’t appear to be a good one.
To be fair the current driving trend in mathematics education is largely an extension of an existing trend in education generally. The idea is that we need to cater more to the students to better engage them in the material. There is a focus on making things fun, on discovery, on group work, and on making things “relevant to the student”. These are often noble goals, and it is something that, in the past, education schemes have often lacked. There is definitely such a thing as “too much of a good thing” with regard to these aims, and as far as I can tell that point was passed some time ago in the case of mathematics.