Q: My daughter, a high-school sophomore, was proud to get into a summer course in leadership at a local college. However, she got an incomplete because the professor said she plagiarized her paper. Now it will be hard to include that course on her college application. How could he tell?

A: Savvy educators spot the clues and use a range of digital tools -- from a simple Google search to plagiarism trackers -- to check students' work.

"The internet and today's amazing digital tools make cutting and pasting, or even buying the work of others, incredibly easy," says Greta Love, a New York state reference librarian who teaches college students research techniques. "But those same tools make it easier for educators to spot the work of others using databases, search engines and sites that sell or give away term papers and so on."

Worry less about what the incomplete does to your daughter's college application and more about teaching her proper research skills for her writing from now on. That will be the best preparation for college.

Many students simply do not know what plagiarism is, says university educator Robert Harris, author of "The Plagiarism Handbook: Strategies for Preventing, Detecting and Dealing With Plagiarism" (Routledge, 2001).

In an essay titled "Anti-Plagiarism Strategies for Research Papers," Harris writes that students hold misconceptions such as, "Everything on the internet is public domain and can be copied without citation," or, "If you change an author's words into your own words, you don't have to cite it," or, "If you copy fewer than 10 words, it's OK not to use quotation marks."

Some students don't consider copying wrong, notes Harris, because they think information is for everyone. Still others are tempted to copy because they're on a tight deadline, just not motivated by the topic or "know it's wrong, but like the thrill of rule-breaking."

To help your daughter, be explicit. "Plagiarism is using another person's words or ideas without giving credit," writes Harris. "When you use someone else's words, you must put quotation marks around them or set them off in a block quotation and give the writer or speaker credit by revealing the source in a citation.

"Even if you revise or paraphrase the words of someone else or just use their ideas, you still must give the author credit in a citation. Not giving due credit to the creator of an idea or writing is very much like lying because without a citation, you are implying that the idea is your own."

Once students understand why it's wrong, Harris takes a positive approach. "Learning to write makes a person powerful," he explains. "Whenever they cite a source, they are strengthening their writing, not weakening it."

He goes on: "Citing a source, whether paraphrased or quoted, reveals that they have performed research work and synthesized the findings into their own argument. ... The student is aware of other thinkers' positions on the topic."

Find more advice from Harris at his website VirtualSalt.com.

For more information, check out "The Plagiarism Spectrum: Tagging 10 Types of Unoriginal Work" at turnitin.com.

(Do you have a question about your child's education? Email it to Leanna@aplusadvice.com. Leanna Landsmann is an education writer who began her career as a classroom teacher. She has served on education commissions, visited classrooms in 49 states to observe best practices, and founded Principal for a Day in New York City.)

Q: My daughters, ages 9 and 10, are earning money doing chores for neighbors such as dog walking, watering plants and redeeming cans. I want to teach them about investing and running a business before they spend it all. Are there apps for that?

A: There are apps and some good books, too. But before teaching them how to run a business, start with savings -- namely, why we save and how.

Educator Gail Karlitz, author of "Growing Money: A Complete Investing Guide for Kids" (Price Stern Sloan, 2010), suggests you begin by explaining the concepts of needs (food, housing, clothes), wants (treats, entertainment, things we like but don't need), goals (things we must save for, such as a new bike), and giving (charitable donations, birthday presents).

She encourages kids to use a clear plastic envelope, box, jar or piggy bank for each category, so "they can see the actual money."

Karlitz also suggests keeping a notebook with a running total of what they are earning, and how they are allocating their earnings in each category.

One website, ThreeJars.com, helps kids track their money in saving, spending and sharing jars. The site shows them the tradeoffs between saving and spending, and allows them to earn interest on their savings jar. (It costs $30 annually.)

You can teach the girls about running a business by drawing examples from their summer. Lead them through questions such as, "What do you need to increase can redemptions?" If the answer is investing in a larger bin to store more cans until making a trip to the redemption center, you can discuss what that costs and if the investment is worth it.

Educational game maker Motion Math has created a couple of excellent apps that simulate running businesses and boost kids' math and reasoning skills, says Warren Buckleitner, the editor of the Children's Technology Review (childrenstech.com).

The "Motion Math: Pizza!" app gives kids a start-up budget to open a pizza shop with customers who must be kept satisfied.

The "Motion Math: Cupcake!" app lets players bake and sell cupcakes and be responsible for making decisions that influence all aspects of the business, from delivering orders to managing costs.

"Even though it's pretend money, kids start to understand that if you blow all your money on sprinkles for your cupcakes, you won't have enough to meet all the customers' needs and you lose money in the end," says Buckleitner.

Each app costs $6 and is available at the Apple Store.

Two books geared to your daughters' age levels can help teach them more sophisticated investment concepts.

"How to Turn $100 Into $1,000,000" (Workman, 2016) offers an easy-to-grasp explanation of compound interest, what the book calls "the most powerful force in the financial universe."

In "Blue Chip Kids: What Every Child (and Parent) Should Know About Money, Investing, and the Stock Market" (Wiley, 2015), author David Bianchi makes sophisticated concepts such as stocks, bonds, analyzing companies, interest rates, net worth and asset allocation understandable.

As you're studying the best books or apps for your kids, take heart: Surveys have shown that 1 in 5 American adults think that hitting the lottery is the best strategy to save for retirement. Your daughters are lucky. They will have no such illusions.

(Do you have a question about your child's education? Email it to Leanna@aplusadvice.com. Leanna Landsmann is an education writer who began her career as a classroom teacher. She has served on education commissions, visited classrooms in 49 states to observe best practices, and founded Principal for a Day in New York City.)

(Do you have a question about your child's education? Email it to Leanna@aplusadvice.com. Leanna Landsmann is an education writer who began her career as a classroom teacher. She has served on education commissions, visited classrooms in 49 states to observe best practices, and founded Principal for a Day in New York City.)

Q: My husband and I just divorced; our two elementary school-aged daughters will spend the school week with me and most weekends with him. They are still dealing with the impact of their father moving out. Should we let their new teachers know about the divorce?

A: Yes. You don't need to go into detail, but alerting the teachers is in everyone's best interests. Research shows that children whose parents were divorcing reported being more anxious, lonely and sad than children whose parents remained married. According to a 2011 study of 3,500 elementary children, parents' divorce caused setbacks in math and social skills.

"Any major change in a family's circumstances can have a strong impact on children's emotional wellbeing and sense of security," says Dr. Jane Bluestein, an Albuquerque-based educator and psychologist who works with teachers and parents to improve the social-emotional climate in schools. "Any big transition can affect children's concentration, commitment to school, achievement and behavior. So it makes sense to let the school know anytime some significant incident, loss or change occurs."

Bluestein says that when she taught, she always appreciated knowing if a student's parents were going through a divorce -- "not to make excuses for the child's backsliding or acting out, but to know that a little extra support and TLC might be in order. Teachers want to build a productive home-school relationship. Letting them know means that they can help your daughters through a time of change."

Keep an eye out for changes in behavior or signs of stress and anxiety. "Most schools have resources -- likely a counselor -- who can support students through these transitions," advises Bluestein. "Find out about what's available, even if you think you won't need it."

Routines and consistency are important for all children, but especially so for kids who are dividing their time between two different homes. Bluestein advises working with their father to align your school-related expectations for the girls. For example, establish a common bedtime for school nights and weekends; decide when homework will be done and how it will be checked; make sure you're on the same page concerning extracurricular and weekend activities so that they don't miss experiences that their friends are a part of.

Most important is establishing strong, ongoing communication with the school. How will you and their father stay informed about your daughters' progress?

Unless there are extenuating circumstances, "both father and mother should receive communications from the school, such as teacher and school newsletters, access to the school portals, notices of upcoming events, and report cards," says Bluestein. "You should both be listed as emergency contacts and, if possible, attend parent conferences together so that your daughters know that you both care about their schooling and share expectations for their success." Bluestein offers more practical tips parents on her website: janebluestein.com/2016/ways-to-help-your-child-survive-your-divorce/.

Another helpful resource is the book "Putting Children First: Proven Parenting Strategies for Helping Children Thrive Through Divorce" (Avery, 2010). The author, Joanne Pedro-Carroll, Ph.D., is a clinical psychologist who has studied the impact of divorce. Her research-based advice can help you guide your daughters in the big transitions that accompany separation and divorce.