Undead Astronauts

a Texas A&M study found 70% of middle grade students didn’t fully understand the equal sign.

“The equal sign is pervasive and fundamentally linked to mathematics from kindergarten through upper-level calculus,” Robert M. Capraro says. “The idea of symbols that convey relative meaning, such as the equal sign and “less than” and “greater than” signs, is complex and they serve as a precursor to ideas of variables, which also require the same level of abstract thinking.”

The problem is students memorize procedures without fully understanding the mathematics, he notes.

“Students who have learned to memorize symbols and who have a limited understanding of the equal sign will tend to solve problems such as 4+3+2=( )+2 by adding the numbers on the left, and placing it in the parentheses, then add those terms and create another equal sign with the new answer,” he explains. “So the work would look like 4+3+2=(9)+2=11.

i’m not sure what to say about that.

“About 70 percent of middle grades students in the United States exhibit misconceptions, but nearly none of the international students in Korea and China have a misunderstanding about the equal sign, and Turkish students exhibited far less incidence of the misconception than the U.S. students,” note Robert M. Capraro and Mary Capraro of the Department of Teaching, Learning, and Culture at Texas A&M.

i wonder why they didn’t look at kids in europe and africa to see if they had similar issues. but the US always seems to hold its own in math competitions! US girls just placed 2nd in a math competition in china against 19 other nations for god’s sake! oh but look at this pic of the medalist girls…

hmm yeah, never mind.

(source)