Resources
N/AN/A. Internet Dict. 2016. Internetdict.com. May 6, 2017. http://www.internetdict.com/answers/who-invented-subtraction.html
N/A. Reference. 2017. ICA Publishing, LLC. April 30, 2017. https://www.reference.com/math/invented-addition-9be974c2fa3a2fdf
N/A. Prezi. 2017. Prezi INC. May 1, 2017. https://prezi.com/xyf3sjycws8o/who-invented-plus/
N/A. Life and Style. 2017. Guardian News and Media. May 3, 2017 https://www.theguardian.com/lifeandstyle/2014/may/17/ask-a-grown-up-who-invented-times-tables
N/A. Inquiry Maths. N/A. Google Sites. May 4, 2017. http://www.inquirymaths.com/home/number-prompts/adding-fractions-inquiry
N/A. Reference. 2017. ICA Publishing, LLC. April 30, 2017. https://www.reference.com/math/invented-addition-9be974c2fa3a2fdf
N/A. Prezi. 2017. Prezi INC. May 1, 2017. https://prezi.com/xyf3sjycws8o/who-invented-plus/
N/A. Life and Style. 2017. Guardian News and Media. May 3, 2017 https://www.theguardian.com/lifeandstyle/2014/may/17/ask-a-grown-up-who-invented-times-tables
N/A. Inquiry Maths. N/A. Google Sites. May 4, 2017. http://www.inquirymaths.com/home/number-prompts/adding-fractions-inquiry