The initiative is part of Harry Potter at Home, a website that offers quizzes, games and other activities.
"The teachers, parents and carers working to keep children's lives as normal and happy as possible while we're all on lockdown deserve a bit of magic," Rowling said when the site launched.
"I hope these initiatives will give children and even adults a happy distraction during their enforced stay-at-home time."
The website states: "Welcome to the Harry Potter At Home hub where you'll find all the latest magical treats to keep you occupied - including special contributions from Bloomsbury and Scholastic, nifty magical craft videos, fun articles, quizzes, puzzles and plenty more for first-time readers, as well as those already familiar with the wizarding world.
"We're casting a Banishing Charm on boredom!"
• Covid19.govt.nz: The Government's official Covid-19 advisory website