Grade 3 - 5

Why does a baking soda and vinegar volcano erupt? That's what happens when you mix and an acid and a base. But just what are acids and bases? What makes them so different? Learn the answers… More →

Throughout history, there have been different civilizations that dominated the world they lived in. Explore the growth and development of key ancient civilizations, including important… More →

Fury faces, scaly flippers, and green vines are vanishing. Why are so many animals and plants disappearing? Climate change is pushing a wave of extinction across the planet. Explore the… More →

There are millions of animals on this planet. Some fly with feathers, others swim under the sea. We use classification to keep them all straight. Follow along with easy-to-understand content… More →

Computers can now drive cars, translate live speech, and even solve real-world problems. Some of the most cutting-edge advancements have been made thanks to artificial intelligence. But just… More →

Everything around us is made of matter, but what is matter made of? Atoms and molecules! Learn all about how the smallest things in our universe come together to make the biggest, examine… More →

Bring biology to life with this curricular high-interest, low-reading level series. An engaging exploration of the living world keeps struggling readers interested while carefully leveled… More →

From dry deserts to watery oceans, the world is divided up into many biomes. Explore how the living and nonliving things of a space interact, what makes up each biome, and more. Follow along… More →

The body is made up of many amazing parts. They work together in different body systems that keep us moving, feeling, and living. How does the brilliant body do this? It's time to explore the More →

Between spending, saving, and earning money, how does anybody keep track of it all? They make a budget! Learn all about budgeting. Discover the different parts of a budget, how people and… More →

From dandelions to dolphins, all living things are made up of the same itty-bitty things--cells. Discover the parts of a cell, the differences between plant and animal cells, how cells… More →

All across the world, there are stories of books being banned, topics being cut from curriculum, and protests being shut down. Some think this censorship protects and prevents harm while… More →