Math in Texas is different than the rest of the US: Here's how that happened
While math is math and the numbers may not change, students in Texas learn it differently than in other states. In fact, it's illegal for Texas students to have the same math standards as most of the US. Here's how Texas math differs, and how that happened.
United States New Mexico National Commission Of Excellence National Research Council Department Of Education Common Core
Source: myhighplains.com