Science Friday Published by Science Friday Hr1: News Roundup, National Parks, Teaching Math, Limbs Listen 47 min Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/657719/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend Educators argue over how to shake up math education, like ditching pre-calculus and emphasizing real-world thinking. Plus what a fish and a rare amphibian can tell us about how limbs develop, grow, and even re-grow.