Grade 4

Living in parts of the Eastern United States, copperheads are named after the orange-brown color of their bodies. Students will learn about the diet, habitats, and physical characteristics of More →

Part airplane and part helicopter, the V-22 Osprey hovers in the air as U.S. Marines jump behind enemy lines. Kids will learn about the V-22 Osprey’s vertical take-off and landing, defensive… More →

Ticonderoga Cruisers use their advanced Aegis System to defend U.S. Navy warships. Young students will join these guided-missile cruisers in action and read about the advanced weapons and… More →

Loaded with guns, torpedoes, and guided missiles, Arleigh Burke Destroyers are always ready to protect U.S. Navy warships. Young readers will learn how these destroyers use the latest… 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 →

The United States Navy uses the Super Hornet to carry out bombing missions and to protect the fleet. Young learners will read about the Super Hornet in action, the history of the Super… More →

Visit the racetrack in this book to see fast cars compete against each other. Race cars have powerful engines and fearless drivers. Zoom through this book and discover different types of race More →

Wedges are simple machines used to split, lift, or hold an object in place. Children will discover how wedges perform jobs for people and how they make everyday life easier. More →

Gymnastics is a sport requiring strength, flexibility, and agility. Gymnasts perform routines on different pieces of equipment during competitions. Young readers will discover the history and More →

The MH-53J Pave Low’s main mission is to pick up and deploy troops behind enemy lines. It flies low to the ground and uses advanced technology to sneak in undetected. Young learners will find More →

Ramps are simple machines used for work and play. Workers use them for easy loading and unloading. Skateboarders use them to do tricks. Readers will learn how ramps make work easier and how… More →

The EA-6B Prowler’s primary mission is to provide protection for strike aircraft, ground troops, and ships by jamming enemy radar and communications. Kids will learn the tools Prowlers uses… More →