It is a collection of 150 brain teasing math riddles and puzzles. Their purpose is to make children think and stretch the mind. They are designed to test logic, lateral thinking as well as memory and to engage the brain in seeing patterns and connections between different things and circumstances. They are laid out in three chapters which get more difficult as you go through the book, in the author’s opinion at least. The answers are at the back of the book if all else fails. These are more difficult riddles and are designed to be attempted by children from 10 years onwards, as well as participation from the rest of the family. Tags: Riddles and brain teasers, riddles and trick questions, riddles book, riddles book for kids, riddles for kids, riddles for kids aged 9-12, riddles and puzzles, jokes and riddles, jokes book, jokes book for kids, jokes children, jokes for kids, jokes kids, puzzle book

    As we dream with him, we are taken further and further into mathematical theory, where ideas eventually take flight, until everyone--from those who fumble over fractions to those who solve complex equations in their heads--winds up marveling at what numbers can do.Hans Magnus Enzensberger is a true polymath, the kind of superb intellectual who loves thinking and marshals all of his charm and wit to share his passions with the world. In The Number Devil, he brings together the surreal logic of Alice in Wonderland and the existential geometry of Flatland with the kind of math everyone would love, if only they had a number devil to teach them.

    But years later when she returns home, she is shocked to see whole forests being cut down, and she knows that soon all the trees will be destroyed. So Wangari decides to do something—and starts by planting nine seedlings in her own backyard. And as they grow, so do her plans. . . .         This true story of Wangari Maathai, environmentalist and winner of the Nobel Peace Prize, is a shining example of how one woman’s passion, vision, and determination inspired great change.         Includes an author’s note.This book was printed on 100% recycled paper with 50% postconsumer waste.

    She goes on to explain that even one tree is nice, if it is the only one you happen to have.Some of the reasons why trees are so good to have around are funny. Some are indisputable facts. But in all of them there is a sense of poetic simplicity and beauty which will be sure to entrance any young child. Whether he knows one tree or many, he will relish the descriptions of the delights to be had in, with, or under a tree.Marc Simont's joyous pictures, half of them in full color, accentuate the child-like charm of the words. And each painting of a tree or trees shows just how very nice they can be.

    A Caldecott medalist and a Newbery Honor-winning poet celebrate the beauty and value of spirals.What makes the tiny snail shell so beautiful? Why does that shape occur in nature over and over againbut also celebrate the beauty and usefulness of this fascinating shape.

    Fast forward three years to the present, Rachel has transformed "Rugmo and the Other Side of the Fence," to "A Wolf Pup's Tale;" a beautifully illustrated, enchanting children's book. It is a story about a young wolf pup, whose curiosity leads him to discovery, danger, and friendship.

    Yet contrary to popular belief, George Washington never had a set of wooden teeth. Starting at the age of twenty-four, he lost on average a tooth a year, and by the time he was elected President, he had only two left! In this reverentially funny tale based on Washington’s letters, diaries, and other historical records, readers will find out what really happened as they follow the trail of lost teeth to complete tooflessness.

    Young readers will delight in the counting game while learning the basics of multiplication. Star cartoonist Ivan Brunetti’s ingenious and fun-to-read comic turns everyone into a math whiz!

    But do you really know what a million looks like? If you'd like to see -- actually see, right now, with your own eyes -- what a million looks like, just open this book. Be prepared to learn some interesting things along the way. Like how many shoe boxes it would take to make a stack to Mount Everest. And be prepared to do some number wondering of your own. But, most of all, be prepared to be amazed. Because a million is a LOT of dots.

    This extraordinary book collects animal information not available anywhere else—and shows all 30 roosting holes, all 200 spots, and, yes!, all 1,000 baby seahorses in eye-catching illustrations. A book about picturing numbers and considering the endlessly fascinating lives all around us, Lifetime is sure to delight young nature lovers.

    "This is Thunder Cake baking weather," calls Grandma, as she and her granddaughter hurry to gather the ingredients around the farm. A real Thunder Cake must reach the oven before the storm arrives. But the list of ingredients is long and not easy to find . . . and the storm is coming closer all the time!Reaching once again into her rich childhood experience, Patricia Polacco tells the memorable story of how her grandma--her Babushka--helped her overcome her fear of thunder when she was a little girl. Ms. Polacco's vivid memories of her grandmother's endearing answer to a child's fear, accompanied by her bright folk-art illustrations, turn a frightening thunderstorm into an adventure and ultimately . . . a celebration!Whether the first clap of thunder finds you buried under the bedcovers or happily anticipating the coming storm, Thunder Cake is a story that will bring new meaning and possibility to the excitement of a thunderstorm.

    Sarah Hale's inspiring story, accompanied by luscious watercolor illustrations, tells the tale of one woman who wouldn't take no for an answer.

    Here are 12 "hypotheses," as well as lists of "what you need," "what to do," and "what happened" that are sure to make young readers laugh out loud as they learn how to conduct science experiments (really!). Jenny Offill and Nancy Carpenter—the ingenious pair that brought you 17 Things I'm Not Allowed to Do Anymore—have outdone themselves in this brilliant and outrageously funny book.

    Prompted by a poem and a visual clue, students are asked to answer what fration is illustrated in the cow's antics, starting with halves and progressing into thirds, fourths, eights, and tenths.

    A reward of one grain of rice doubles day by day into millions of grains of rice when a selfish raja is outwitted by a clever village girl.