I looked over Cassidy's work, scanning each problem with the critical eye I'd developed during our sessions. The first five problems looked solid, and she'd even caught her own sign error on problem three, circling it in red and correcting it without prompting. Progress.
"These look good," I said, tapping the page. "You're starting to get the hang of it."
"Whatever," Cassidy muttered, but her mouth twitched at the corner – almost a smile before she suppressed it. "I'm still losing in our overall count."
"True, but you're catching up. At this rate, you might actually win our bet."
Her purple eyes flashed up at me. "You think I won't?"
"I think you're giving me a run for my money." I pulled the graph paper closer. "Now, what's the issue with the quadratic formula?"
Cassidy pointed to problem six with her pen. "I keep getting the wrong answer. I've tried it three times."
