We asked more than 200 teachers,children's authors,and children's literature experts to name the best picture books ever.We made a list based on their advice.Here are some of the books in the list.

    If You Give a Mouse a Cookie by Laura Numeroff,illustrated by Felicia Bond

    Who it's for: Grades PreK-2

    What it's about: Oh,that hungry mouse.Once you give him the cookie,he will ask for a glass of milk,and then a straw（吸管）and then...The action is unstoppable!In the end,the mouse and the boy that gives him the cookie (and perhaps the reader) are extremely exhausted!With terrific pictures and a wonderful lead character,this book shouldn't be missed by little kids.

The Other Side by Jacqueline Woodson,illustrated by E.B.Lewis

    Who it's for: Grades 1-4

    What it's about: This is a story about a fence（篱笆）that divides a white neighborhood from a black one and two little girls whose need for play and friendship allow them to cross it.It has a very deep theme.

Owl Moon by Jane Yolen,illustrated by John Schoenherr

    Who it's for: Grades 1-5

    What it's about: A classic example of child's expanding a simple walk into a glorious adventure.As a girl and her father hike through the moonlit night,the creatures they come across become exciting companions（同伴）for their owl hunt.

    The Snowman by Raymond Briggs

    The only wordless story on our list.

    Who it's for: Grades PreK-2

    What it's about:A great book to lead a child into reading.A fanciful story of a boy who makes and then befriends a snowman who both enters his world and takes him out for fun.

    A creative mom Danielle Lindemann is a mother to a soon-to-be 3-year-old daughter. When she received the Disney-brand book What Is A Princess? as a gift for her daughter, Lindemann thought the messages seemed a little shallow.

Lindemann's efforts included changing “A princess is kind” to “A princess is kind of a badass” and completing the sentence “A princess likes to dress up”. “I just want my daughter to see that she can be anything she wants,” the mom explained, “She can also speak her own mind and be a doctor or a senator if she wants.”

    After Lindemann made the changes, she thought her daughter might be a bit confused, but the daughter actually just rolled with it. Lindemann did not intend for many people to see her edits. She just found it amusing. Though she didn't imagine having such a wide audience, Lindemann says she thinks it's great if her edits make people smile or even think a bit differently about gender models.

    Further, Lindemann added, “there is absolutely nothing wrong with girls (or boys!) wanting to put on something sparkly and feel pretty. But when the ruling idea is that girls — and women — are judged mainly on their physical appearance in a way that boys and men are not, I think it's important to model some other values for these girls as well.”

    As a parent, she believes it's important to show girls that their worth does not lie only in their physical appearance and that their other qualities are valuable and important. For her, if there were a variety of children's books out there in which little girls were shown playing with trucks and trains and learning to be engineers and surgeons, and if there were books out there in which boys were shown getting a kick out of dressing up in fancy clothes, it would be a different world.

     “At present, it's not that world. But time will tell,” she stressed.

    How often do you let other people like a bad driver, a rude waiter, or an angry boss, change your mood?

    Sixteen years ago I learned a lesson. I got in a taxi, and we took off for Grand Central Station. We were driving in the right lane when all of a sudden, a black car jumped out of a parking space right in front of us. My taxi driver used his brakes, the tires made a loud noise, and at the very last moment our car stopped just 3cm from the back of the other car.

    I couldn't believe it. But then I couldn't believe what happened next. The driver of the other car, the guy who almost caused a big accident, turned his head around and he started shouting at us. I couldn't believe it!

    My taxi driver just smiled and waved at the guy. So, I said, “Why did you just do that? This guy could have killed us!” And this is when my taxi driver told me what I now call, “The Law of the Garbage Truck”. He said, “Many people are like garbage trucks. They run around full of garbage, full of anger and disappointment. As their garbage piles up, they look for a place to dump it. And if you let them, they'll dump it on you.”

    So I started thinking how often I let Garbage Trucks run right over me and how often I take their garbage and spread it to other people.

    I began to see Garbage Trucks. I see the load people are carrying. I see them coming to dump it. And like my taxi driver, I don't take it personally. I just smile, wave, wish them well, and move on.

Jack Horner is co-author of the book How to Build a Dinosaur. However, he is most famous for his role as consultant(顾问) on all four Jurassic Park films, including the new film Jurassic World.

The original film Jurassic Park tells the story of a theme park where dinosaurs live. In that movie, scientists used DNA collected by ancient mosquitoes that had been trapped in amber shortly after they drank dinosaur blood. The scientists used this dinosaur DNA to create baby dinosaurs. The scientists in Jurassic Park created various types of dinosaurs, but in the real world there is one big problem with the story. It turns out that DNA could not possibly survive the 65 million years since the death of the dinosaurs.

The new movie creates the Indominus Rex. This idea of creating a hybrid species is something Horner has explored before. In 2011, he gave a speech in which he discussed producing a dinosaur by working with the genes of a bird. Modern birds are the closest living relative of dinosaurs.

The concept of using the genes of different animals to create new animals is called transgenic science. And this type of science has already produced some interesting results — goats that produce spider silk in their milk, cows that produce proteins for medicines that can treat diseases, and a pig that produces less-polluting waste thanks to a bit of mouse DNA. However, none of these examples are close to the dinosaurs in Jurassic World. And for a good reason — genetics is a very complex science. Producing a new species is not as simple as just exchanging a few genes around.

In the end, Jurassic World is all about fun.

Public libraries are an excellent resource for research, literacy(读写能力)education, and reading-centered events. Most towns have one or share library services with other towns through a mobile library, and the use of a public library is free to people who are willing to apply for a library card.

There are several primary sources of library funding(资金)， starting with national funds which are distributed to states or provinces. These regions send the funds on to public libraries. Local governments also play an important role in providing funding for libraries, and most librarians apply for grants(拨款). Finally, private donations help to maintain libraries—most libraries have an association of Friends of the Library which organizes fund-raising sales and pays annual dues to help maintain the library.

Grants and private donations can also be used to provide a large amount of funding for public libraries, and some large libraries maintain a separate staff to increase the amount of funding that they can obtain through these sources. Grants include technology grants which allow libraries to install and upgrade computer systems, grants which focus on a particular topic such as science, fiction, children's books, or local history, and education grants which support locally-based community efforts such as after-school reading programs. Many private donors are pleased to support their local public libraries by donating funds or including some library in their wills, and libraries reward their donors with treats like after-hours visits or privileged access to special collections.

By combining multiple resources, creative librarians can keep their libraries useful, informative, and fun for browsers. When it comes to supporting public libraries, every little bit counts: if you cannot afford to donate to a local library, think about volunteering time to help shelve, lead after-school programs, or organize fund raisers. Being active with your public library is a very important way to contribute to your local community.

Brilliant Ways to Deliver Secret Messages

Many effective ways are used now to deliver secret messages. But in the past when the science and technology was not developing, especially during the war, how did people send secret and important messages?

Shoelaces

In the 1950s, the U.S. Central Intelligence Agency created a book of tips to teach spies ways to communicate in public. One tip: Lace up your shoes. Tied one way, the laces might mean "I have information": tied another, "Follow me". The spies could communicate while everyone else probably thought, "That guy can't tie his shoes correctly!"

Tattooed (刺文身) Head

Around 513 B.C., Histiaeus was forced out as the ruler of an ancient city. So he wanted to send a message to his supporters: Rebel against the king who took away his power.

Histiaeus called in a slave, shaved his head and tattooed the message onto the man's skin on the top of head. After the slave's hair grew back, he travelled to Greece with orders to shave his head again. Message received!

Orange Juice

In 1597, John Gerard was imprisoned in the Tower of London in England. He asked the prison guard to let him send letters written in charcoal (木炭). But then he wrote another message on top using the juice from an orange-which was only visible when the juice was dry and the page heated. With his invisible ink, he escaped successfully.

Songs

In the 1800s, African American slaves couldn't talk openly about their plans to escape to freedom—so they secretly sang about it.

Swing Low, Sweet Chariot might sound like a religious song. But for slaves, the "sweet chariot" was the code for the Underground Railroad, the network of people who helped slaves head to northern states and Canada. The song Wade in the Water warned escaped slaves to get in the water so dogs wouldn't smell them. With these songs, hundreds of people escaped slavery.