Meet the New Common Core

mathyone
Fri, 19 Jun 2015 13:10:46 +0000

That method may be useful for doing mental math, but it’s far more efficient and less error prone to use the standard method when working problems. I would never add numbers on paper like that.

Honestly, carrying is not that hard for kids to understand. My kids attended Montessori school, and they used some well-designed manipulatives to teach carrying to kids as young as 3. Those materials have been used in many countries for many years to teach these concepts to kids ages 3-5. They were designed for regular kids, not gifted kids in particular. It’s ridiculous to be dragging 3rd graders through this. If they don’t understand this already, there is something wrong with the K-2 education.