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العلوم , التكنولوجيا

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آخر الأخبار كتب الأطفال قصة القصص الخيالية

المراجع العامة الحيوانات , النباتات , الطبيعة , البيئة العلوم , التكنولوجيا القانون , الاقتصاد الإنسان العلوم , السياسة الدين , الفلسفة , علم النفس الفن , الموسيقى أخرى

620 كتب إلكترونية في هذه الفئة

غلاف 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 …

الإنجليزية

غلاف 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 …

الإنجليزية

غلاف 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 …

الإنجليزية

غلاف 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 …

الإنجليزية

غلاف 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 …

الإنجليزية

غلاف 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 …

الإنجليزية

غلاف 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! …

الإنجليزية

غلاف 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. …

الإنجليزية

غلاف 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 …

الإنجليزية

غلاف 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! …

الإنجليزية

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