“For some, common core is creating common confusion,” said education correspondent Rehema Ellis on a recent NBC News segment. The crux of the news piece was that parents are struggling to help their ...

The Stop-Drop-Roll method behind Systematic Subtraction — via negativa for leaders who default to addition, not subtraction.

You're currently following this author! Want to unfollow? Unsubscribe via the link in your email. The Common Core math standards are a topic of hot controversy, especially on the right. The Daily ...

When you subtract using large numbers, it's often better to use a written method. Column subtraction is a good written method to take one number away from another. It involves writing the smaller ...