Katina Tibbetts is determined to hold all her students to high standards. But she also knows that different kids need different kinds of help to get there. Tibbetts, who teaches 1st, 3rd, and 5th ...

All those long multiplication tables. Timed tests and “mad minutes” of worksheet problem-solving. Fluency drills. Somehow, getting kids to know their basic math facts continues to be at the heart of ...