Barasch: Teachers and school leaders need to stop resisting new approaches to math that can help students master the subject.

THEY WANT TO BE ABLE TO USE IT TO THEIR ADVANTAGE. AND NOW 400 STUDENTS HERE ARE ABLE TO DO THAT. THEY’RE ABLE TO USE IT EVERY SCHOOL DAY IN BOTH MATH AND SCIENCE. THAT’S WHY WE’RE SPINNING TODAY ON ...