Decline of CDN students’ math skills the fault of ‘discovery learning’

I honestly have no opinion here, but I will admit to some skepticism about research from "think tanks" - I always look for the person behind the curtain. That said, evidence should drive action - if a decline is real (adjusted for all factors) and it can be traced to teaching methods (all else being equal) then those teaching methods should be changed. But lets wait until we get more information to tie things together.

“You know what’s the worst kind of instruction? The kind of instruction that makes kids feel stupid. And that’s what a lot of that discovery stuff does; their working memory gets overloaded, they’re confused. That’s bad instruction,” said Anna Stokke, an associate professor in the University of Winnipeg’s department of mathematics and statistics, who wrote the C.D. Howe Institute report.