Pop star Britney Spears is taking algebra classes so that she can help her kids with their studies.
Spears, 33, has two sons Sean Preston, 9, and Jayden James, 8, with ex-husband Kevin Federline.
"They go to a really hard school, and this week we had three hours of homework (a night). Some of it is hard for me. Next year when [Preston's] in fifth grade, he's going to be doing pre-algebra, and I'm taking classes so I know how to do it," she said.
The singer said she has kept a reward system to motivate her sons, reported People magazine.
"Homework is a priority, and we have a reward system that helps motivate them. If they get so many A's, they get one toy a month," she said.
