Q. Calculators are tools used to help people with math.

Q. If a student wants to succeed in math, they should not use a calculator.

Q. The youngest sibling in a family is always the most vocal.

Q. Many schools in the U.S. have laptops for their students.

Mount Everest is the world's tallest mountain. For 70 years, people have been attempting to make this treacherous journey, and more than 10,000 people have accomplished that goal. This is a very dangerous challenge, but it is worth it in the end.

Q. Which sentence above contains an opinion?

Q. People who live in cities with public transportation, such as New York and San Francisco, should not drive their cars to work

Riley Vinson, 10, is a fourth-grader at Seldens Landing Elementary School in Leesburg. Two years ago, Riley missed a church skating and hot chocolate party at the Ion because she was sick. Her mother took her to the rink later to make up for the missed party. This turned out to be the best decision of her life. Riley discovered that she loved skating. But it is not all flying and fun. Skating is hard work. Riley practices six days a week for an hour or two a day. Some practices are off-ice to get her in the physical condition needed for skating. While I think kids should not specialize in one sport, this seems to be the best fit for Riley.

Q. Which sentence above contains a fact?

The supply-chain crisis has hit bookstores hard, too, and at a particularly devastating time: For many independent bookstores, holiday sales determine whether they will survive another year. So I do my shopping at Parnassus Books, where the people who work there have become my friends. Even if the book I have in mind for a particular friend or family member isn't available, a knowledgeable bookseller will help me find something even better. That's true at every bookstore I've ever been in. Bookstores are places where supply-chain problems can be easily compensated for.

Q. Which sentence from above contains a fact?

Q. A 2009 study published in the Journal of Nutrition indicated that older rats whose diets included walnuts showed fewer signs of brain aging than rats whose diets did not include walnuts.