Grade 3

People must go through difficult training to become astronauts. Kids will learn how astronauts prepare for life in space, complete their missions, and survive above the atmosphere. More →

The planet Mercury has highs around 800 °F and lows around -280 °F. Students will learn about Mercury’s discovery, physical characteristics, and the environment that supports these extreme… More →

The planet Uranus has a bright blue-green color because of methane gas in its atmosphere. Young children will learn about the discovery of Uranus, how it has been explored, and why it is… More →

With reflective clouds, Venus appears to be the brightest planet in the night sky. Young students will read about the discovery of Venus, its harsh environment, and the ways it has been explored. More →

Pluto is a dwarf planet with three known moons—Hydra, Nix, and Charon. Children will explore Pluto’s physical features, its position in the solar system, and why it is no longer considered a planet. More →

Coral snakes have bright colors to warn predators that they are poisonous. Young learners will find out how these small snakes look, where they live, and how they hide from predators and… More →

The solar system is made up of planets, moons, asteroids, comets, meteoroids, and more. Young readers will learn about the bodies that make up the solar system and how they interact with each other. More →

F-35 Lightning IIs are U.S. Air Force strike fighters that battle enemy aircraft to control the skies. Readers will track F-35s on active missions and study the high-tech weaponry and… More →

Male sea horses have a unique role in the sea horse life cycle. They carry the eggs and give birth to as many as 200 babies at one time. Young children can track a sea horse’s life cycle from More →

Bees begin their life cycle as eggs in honeycomb cells. Every day, a queen bee can lay as many as 2,000 eggs. Young readers will study a bee’s growth from egg to grub to pupa to adult. More →

Astronauts live and work on space stations that orbit Earth. Young readers will read about space station parts, the first space stations, and the International Space Station. More →

The sun radiates light, heat, and energy at the center of the solar system. Eager students will explore how the sun works and its relationship to Earth and the other planets. More →