Introduces the opposites near and far by comparing the behavior of such animals as fox pups that stay near dens and butterflies that migrate far south.
Introduces the opposites up and down by comparing the behavior of such animals as eagles up in the air and fish down in the sea.
Introduces synonyms for big by comparing large, huge, massive, and enormous sea animals.
Introduces differences in size by comparing groups of big animals, such as big turtles, wildcats, and ocean creatures.
Introduces differences in length and height by comparing dog breeds and their features, such as legs, ears, and noses.
Introduces differences in weight by comparing heavy, heavier, and heaviest everyday machines, such as motorcycles, cars, and trucks.
Introduces differences in lengths by comparing lengths of baseball diamonds, tennis courts, Olympic swimming pools and other distances in sports.
Introduces differences in size by comparing groups of small animals, such as small birds, turtles, and fish.
Introduces differences in height by comparing groups of tall landmarks and structures throughout the world, such as skyscrapers, bridges, and mountains.
This colorful book introduces young readers to the world of color. Readers will learn how an enormous range of colors can be made from just three primary colors. This title also explains the difference between warm colors and cool colors. The book uses famous works of art to show readers how color can be used to both show a scene and convey a message.
Look out! Mina's pet Deinonychuses have spilled the paint! Kids will love this simple book that uses dinosaurs to mix colors in order to create new colors.
Count the circles on Billy's bike as he tries to catch up to his pet Hypsilophodonts. Kids will enjoy looking for shapes in this entertaining book that puts kids and dinosaurs together in everyday situations.
Understanding how to make ten is a key building block in the base-ten system. In this engaging title, young readers explore different number combinations that make up the number ten. Easy-to-follow text and colorful images introduce readers to the concept of a fact family and related facts. The text also models how readers can use their fact family knowledge to solve missing addend questions that equal ten.
This entertaining title introduces young readers to the concept of patterning. Readers will learn that a pattern is an ordered set of numbers or shapes arranged according to a rule. Accessible text and vivid images guide readers as they learn to identify patterning rules and extend patterns. Readers are also encouraged to create their own patterns and recognize patterns in the world around them.
Taking bar graphs in a different direction, this title shows readers how symbols can represent numbers. Readers will explore books in different ways, including the number read by many groups at one point in time, different types of books read, and books read by one group over several months. Readers are encouraged to make their own pictographs through activities.
Using everyday examples such as pizza toppings, the playground, and flowers, this title introduces readers to the basics of pie graphs. Activities reinforce the concepts taught.
This engaging title introduces readers to materials that are either hard or soft. Using familiar examples, readers learn what makes hard and soft objects different and why they are suited for different purposes. Easy-to-understand text and colorful photos invite young readers to identify and classify hard and soft things around them.
Pressing Down explores the benefits and uses of the lever. RobbO and RobbEE learn how a lever can be formed in three different ways to do different kinds of worklift and lower, separate, and open.
Pulling Up explores the benefits and uses of the pulley. This clever device uses rope wound over a grooved wheel to help lift heavy loads. RobbO and RobbEE use a pulley to remove the engine from their car.
Rolling Along explores the benefits and uses of the wheel and axle. RobbO and RobbEE build a cart to make it easier to move a heavy load, and learn how the wheel and axle are also used for lifting and turning.
Sloping Up and Down explores the benefits and uses of the ramp. RobbO and RobbEE learn that a ramp is called an inclined plane. They discover that ramps are used for building stairs and escalators, and were even used as far back as ancient Egypt to build the pyramids.
Splitting Apart explores the benefits and uses of the wedge. RobbO and RobbEE need to build a wedge-shaped machine to move the snow piled outside their workshop. They find lots of other uses for a wedge, too.
Winding Around explores the benefits and uses of the screw. RobbO and RobbEE learn how to hold materials together using a screw, and how to use it to lift up loads and raise water.
This innovative title supports both math and science standards. Readers learn to identify different tools used to measure matter, such as balances, rulers, and thermometers. Easy to follow text helps readers gain hands-on experience measuring, collecting and recording data, and graphing their results.
Real-world examples and engaging activities guide readers in learning about measuring length. Readers practice selecting appropriate measuring tools and units of measurement, converting between units, estimating length using standard and metric units, and solving problems by measuring.