Motion is a change in an objects position. This fascinating title explains in a clear, simple way how objects are moved by a change in energy. Simple activities show young readers how energy is changed by applying a force, either by coming in contact with an object or by a force that does not touch it physically, like gravity.
Four hungry Torosauruses are chasing three fast Mynonykuses. One of them is not going to get lunch! Kids will love counting dinosaurs in this exciting book about numbers.
This engaging title builds on the material covered in the Fractions title in this series. Readers will develop an understanding of fractions as numbers. Easy-to-follow text and supportive images help readers recognize and generate equivalent fractions. Readers will also learn how to compare two fractions with the same numerator or the same denominator and represent fractions on a number line.
Engaging narrative, vivid photographs, and real-world examples combine to teach readers how to solve time word problems. Readers will learn how to measure time intervals in minutes and represent authentic time problems on a number line diagram.
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.
Calendar Math provides an ideal introduction to measuring time. From the days of the week to months of the year, readers will learn the different ways a calendar measures time. Vivid full-color images and entertaining narrative text model concepts such as patterning, comparing and contrasting, and solving simple problems.
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.
How do you change the direction of a moving object? This entertaining book explains how forces can change the direction of an object in motion. Simple explanations and activities help children understand the science behind forces.
How do you move objects from one position to another? This fun book explains how a force, such as a push or a pull, can put an object in motion. Simple activities show how a force can move an object that is not moving or stop one that is.
How do you change the speed of a moving object? This interesting book explains how forces, such as friction, and the mass of an object, can change the speed of an object in motion. Simple activities help children understand such concepts as acceleration and deceleration.
What materials will keep you dry on a rainy day? What materials will help you clean up a spill? Child-friendly examples and vibrant photographs support readers as they explore how different materials respond to liquids.
Vibrant photographs and accessible text introduce young scientists to the concept of density. Readers are encouraged to explore what makes some objects float and others sink.
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.
This engaging title helps young scientists identify, compare, and contrast natural and human-made materials. Child-centered text and vibrant images combine to clearly explain the properties and uses of these materials.
Mathematicians say that symmetry has to be identical parts, but nature is never truly identical. However, it is far more interesting than geometric shapes! Reading this book, children will become aware of the balance of things in nature. They will delight at amazing photographs of butterflies, beetles, leaves and flowers, fruit, sea creatures, and children. This book will show how a person with arms outstretched has fivefold symmetry like a sea star, and if you drew a circle around his or her body in that position, the navel would be at its center.
Structures are part of many primary curriculum guidelines. They usually mean human-made structures such as bridges. Structures are made up of parts arranged in a way that serve a certain purpose. This book looks at natural structures such as plants, animal bodies, mountains, caves, rock formations, and icebergs, the materials from which they are made, and their colors, shapes, and textures. It shows structures made by animals, such as beehives and bird nests. The book also compares natural structures to human-made structures, such as natural bridges and human-made bridges, a ladybug and cars shaped like beetles, a bird and an airplane, and giraffes and construction cranes. This wonderful book with amazing photos will encourage young readers to notice colors and shapes in nature and how they relate to the purpose of structures.
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.
Children ask questions to help them understand the world around them. This sense of wonder and curiosity is a trait shared by scientists. This fresh and thoughtful title encourages readers to embrace inquiry as they learn about the kinds of questions scientists ask and how they investigate to find answers.
Collaboration and communication are important 21st Century skills and key science practices. Using accessible examples, readers will discover how scientists work together, and share ideas and information. Children also learn how and why scientists record information and put this practice into action by using their own science notebook.
We all learn about the world around us by making observations. Scientists are no exception! This intriguing title explains how scientists observe using their senses and tools. Readers will apply what they learn by making observations, comparing, sorting, and classifying.