math concepts to explore
Making Sense of Irrational Numbers
http://ed.ted.com/lessons/making-sense-of-irrational-numbers-ganesh-pai?utm_source=TED-Ed+Subscribers&utm_campaign=adaa3dbca2-2013_09_219_19_2013&utm_medium=email&utm_term=0_1aaccced48-adaa3dbca2-48301153
http://ed.ted.com/lessons/making-sense-of-irrational-numbers-ganesh-pai?utm_source=TED-Ed+Subscribers&utm_campaign=adaa3dbca2-2013_09_219_19_2013&utm_medium=email&utm_term=0_1aaccced48-adaa3dbca2-48301153