Human biology

Have you ever built a cool science project?

Have you ever wondered how the universe began?

How did our knowledge of matter, gravity, and electricity develop over time?

How did our knowledge of cells, heredity, evolution, ecosystems, and photosynthesis develop?

Sunlight, air, water, and minerals help keep plants alive.

A plant can form fruit and seeds when it is pollinated.

Plants have roots, stems, leaves, and sometimes flowers.

Roots help keep plants alive.

Some flowers are able to produce seeds or fruit without getting pollen from another plant.

The flower is the part of a plant that makes seeds or fruit.

Many insects drink nectar and collect pollen from flowers, and in the process they help plants reproduce.

Some plants need to have pollen spread from one plant to another flower in order to reproduce.

Many plants depend on animals to help move pollen around so that the plants can reproduce.

After the 1986 Chernobyl nuclear explosion in Ukraine, scientists believed radiation had created a vast and barren wasteland in which life could never resurface.

The octopus spies a nice, tasty mantis shrimp.

What animal was here?

Does the universe circle around Earth?

Do your eyes send out light like headlights?

Do bulls get angry when they see the color red?

Robots help us understand our universe.

Crackle!

What would you be if your finger bones grew so long that they reached your feet?

A leaf is a leaf, a bit of a tree.

Honeybees are a crucial part of our food chain.

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Could life have previously flourished on Mars?

Seeing brightly colored flowers, hearing nuts go "e;crunch,"e; and feeling cold ice cream on your tongue-we use our senses to explore the world.

Have you ever stared into the night sky, full of stars and planets?

Pouring juice, freezing it, and adding craft sticks are all part of making popsicles.

Putting kernels in a pot, heating them, and adding salt are all part of making popcorn.

Mixing milk, vanilla, and sugar are all part of making ice cream.

Mixing, cooking, and adding salt and pepper are all part of making scrambled eggs.

Heating, melting, and cutting string for a wick are all part of making a candle.

Mixing, pouring, and frosting are all part of making a cake.

The enormous facts about our solar system can make your head spin!

Absorbing facts about the 11.

Learning about heavy physics concepts can sure weigh down your brain!

The supercharged facts about energy and waves can set your brain buzzing!

Would you believe bee's venom could help you feel better?

A dog-shaped bed-and-breakfast.

What would you be if your finger bones grew so long that they reached your feet?

Honeybees are a crucial part of our food chain.

In the sixth century B.

Crackle!

Vibrant photos and relatable text introduce readers to trees, cookies, shoes, and other kid-friendly examples of solids.

In this book, kids will explore common liquids, from the milk poured on their cereal to water trickling from a faucet.

Introduce young readers to different types of gases, including air, steam, helium and more.

Acquaint emergent readers with different objects that spin-think tops, fans, and more!

Explore the motion of rolling through simple text and colorful pictures highlighting dice, rolling pins, and more.

This easy text presents the concept of staying still by examining trees, rocks, and other stationary objects.