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Știință, tehnologie

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620 Ebooks din această categorie

Copertina de Sara Pistoia: Time

Sara Pistoia: Time

Time is the passage of seconds, minutes, hours, days, months, and years. People have always measured time in many different ways. Explore real world examples to learn basic mathematical concepts in …

Copertina de Sara Pistoia: Counting

Sara Pistoia: Counting

If you want to know exactly how many of something there are, you can count them. You can count by ones, by fives, and by tens. Explore real world examples to learn basic mathematical concepts in …

Copertina de Julia Vogel: Length

Julia Vogel: Length

Sometimes people need to measure long distances, such as a football field. At other times, they may need to measure something small, like a tiny dog. Learn about the tools needed to measure how long …

Copertina de Sara Pistoia: Patterns

Sara Pistoia: Patterns

We use patterns to recognize all kinds of things in our world. Patterns can be made with shapes, sizes, colors, and positions. Explore real-world examples to learn basic mathematical concepts in …

Copertina de Sara Pistoia: Graphs

Sara Pistoia: Graphs

A graph is a way of keeping track when we sort and count things. It helps us compare numbers of different things. Explore real-world examples to learn basic mathematical concepts in Graphs, a Let’s …

Copertina de Julia Vogel: Temperature

Julia Vogel: Temperature

The first thermometers were very different from the ones used today. Imagine two people measuring the temperature of the same water with different thermometers. Learn about the tools needed to …

Copertina de Sara Pistoia: Measurements

Sara Pistoia: Measurements

We can measure almost everything. We measure things to find out how big they are. Explore real-world examples to learn basic mathematical concepts in Measurements, a Let’s Do Math! …

Copertina de Julia Vogel: The Clock

Julia Vogel: The Clock

Busy people need to keep track of time. A clock is used to measure seconds, minutes, and hours. Learn about different types of clocks and the history of clocks in Clock, an All About Measuring book. …

Copertina de Gordon McComb: Building Your Own Robots

Gordon McComb: Building Your Own Robots

Fun robotics projects that teach kids to make, hack, and learn! There’s no better way for kids to learn about the world around them than to test how things work. Building Your Own Robots presents …

Copertina de Sara Pistoia: Money

Sara Pistoia: Money

We use money to buy things. It is important to know how to count money. Explore real-world examples to learn basic mathematical concepts in Money, a Let’s Do Math! …

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