Скачать с ютуб How Common Core subtraction works в хорошем качестве

How Common Core subtraction works

The Common Core method has many parents concerned. Complaints range from "it's too focused on understanding the steps instead of getting the right answer" to "it's too complicated, I can't even help my kids with their homework." But the way math was taught before Common Core was not always the only way. When the so-called "New Math" was introduced in the 1960s it was met with much of the same criticism Common Core is facing today. -------------------------------------------------- Follow BI Video on Twitter: http://bit.ly/1oS68Zs Follow BI Video On Facebook: http://on.fb.me/1bkB8qg Read more: http://www.businessinsider.com/ -------------------------------------------------- Business Insider is the fastest growing business news site in the US. Our mission: to tell you all you need to know about the big world around you. The BI Video team focuses on technology, strategy and science with an emphasis on unique storytelling and data that appeals to the next generation of leaders – the digital generation.