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What do cars, toys, people, and jelly beans have in common They can all be estimated. Two friends try out their skills and find out that estimating can have real rewards--especially when there's a contest to enter! Full color.

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As they consider sorting their rock collection by color, size, type, and hardness, Josh and Amy learn that the same objects can be organized in many different ways.

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Readers can learn about equivalency in this story about two brothers who are wheeling and dealing in trading dinosaur cards. True dinosaur facts on the boys' cards shown throughout the story are an added bonus. Full-color illustrations.

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Scream down the Dare-Devil Coaster and whirl around in the Twin Spin cars. Join in the carnival fun as 11 friends divide up to fit on the two-to-a-seat roller coaster and the four-to-a-cup teacups ride. Predivision skills have never been so exciting. Full color.

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A drive to recycle cans on Earth Day teaches the children of the Maple Street School Save-the-Planet Club about place value.

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Calendars and clocks keep track of passing time as the Huskies prepare for and compete in the championship soccer game against the Falcons.

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With a few blocks, a board, and a protractor to measure the angles, the hamster champs have built a ramp that lets them fly high! But will this stunt be good enough to outwit Hector the cat

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Kangaroo and his Australian animal friends divide themselves up into different groups for the various field day events at camp.

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The Elm Street Kids' Club decides to sell lemonade to earn money to fix up their clubhouse and they use a graph to keep track of their sales.

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While trying to save enough money to buy a new ice scooter, Perry the Penguin learns about managing his money and about negative numbers.

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Polly's got a pen pal in Canada! When Ally writes that she is 125 centimeters tall, weighs 25 kilograms, and lives 450 kilometers away, Polly needs a little help understanding just what that means. this tale of long distance friendship gives young readers a basic introduction to the metric system. Ages 5+.

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Frog friends Matty and Moe are off with a "Ready, set, hop!" They both made it to the rock, but who's in the lead If Matty hopped five hops and Moe hopped two more hops than Matty, then the score is five to seven. As readers count along, they will sharpen their problem-solving skills and find out which frog is the better hopper. Full color.

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Uses a story about a young boy who is getting a fish bowl ready for his new pet to introduce various units of liquid measure.

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It's four tickets for the River Raft! Just two for the Elephant Twirl! Paul, his sister, and his three cousins each have 20 tickets to spend, and a little simple algebra will help them figure out what rides they can go on at the new amusement park. Full-color illustrations.

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As members of a swim team do laps to qualify for swim camp, readers can practice subtracting two-digit numbers to see how many laps are left to go.

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When the 21st Street Sluggers, a baseball team, have a car wash to raise money, they learn to keep careful track of their dollars and cents.

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It's election time at Camp Grizzly, so who will get the highest percentage ofthe vote "The Grizzly Gazette" explains which candidate gets how much of thevote. Full-color illustrations.

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The face painting booth at the school fair provides plenty of opportunities to count combinations of coins adding up to fifty.

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It's Kangaroo's birthday, but no one will play with him--not the emu, the platypuses, the koalas, or even the dingos. They all have too many things to do. They're using multiplication to figure out just how many things they have to do to plan a big surprise for Kangaroo.

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Matthew has found a treasure map, and soon the Elm Street Kids' Club is off on a quest. The map guides them into a wonderful, magical world, but it's the real-life math skills of understanding distance, scale, direction, and symbols that will help the kids find the treasure. Full color.