Hi-Lo

Ride over dirt, mud, sand, and even rocks--nothing stops an off-road motorcycle! These bikes are built to handle the roughest terrain, whether it's a motocross racetrack or the challenge of an open trail. Rev up struggling and reluctant readers with an...

Combining endurance with off-road capabilities, enduro motorcycles are built for extreme adventure. Bikers race over rough terrain for 75 miles or more to pass several checkpoints at precise times. Rev up struggling and reluctant readers with an exciting...

Built for both city driving and long trips, cruisers are the most popular type of motorcycle. These bikes are comfortable to ride and easy to customize, making them great bikes for first-time riders. Rev up reluctant readers with an exciting look at the...

Hit the open highway with a motorcycle that's built for speed and style. Choppers blend old-school style with modern-age power for a flashy work of art that grabs people's attention as they cruise by. Rev up reluctant readers with an exciting look at how...

Would you have the guts to surf a gnarly, 80-foot wave? Carving the top of the wave. Whipping your board back and forth. Water spraying everywhere. What a rush! Surfing is full of thrills, adventures, and no shortage of dangers. Struggling and reluctant...

Would you have the guts to bomb down a slope? Carving through powder. Hitting extreme tricks on a half-pipe. Snow spraying everywhere. What a rush! Snowboarding is full of thrills, adventures, and no shortage of dangers. Struggling and reluctant Spanish...

Would you have the guts to fly out of a half-pipe? Catching big air. Spinning a frontside 360. Dropping back into the ramp and flying out the other side. What a rush! Skateboarding is full of thrills, adventures, and no shortage of dangers. Struggling...

Could you jump off a cliff? Imagine the wind in your face. The ground getting closer and closer. Then at the very last moment, your parachute opens. What a rush! BASE jumping is full of thrills, adventures, and no shortage of dangers. Struggling and...

Could you vault over a brick wall? Imagine landing the huge jump. Then it's on to the next obstacle. Leaping over stairs. Flipping over ledges. Big jumps and acrobatic moves. What a rush! Parkour and freerunning are full of thrills, adventures, and no...

Would you have the guts to kayak over a waterfall? Rushing waters. Rough currents and rapids. Fallen trees and rocks. What a rush! Water-water kayaking is full of thrills, adventures, and no shortage of dangers. Struggling and reluctant Spanish readers...

Would you have the guts to bike a down a mountain? Dodge jagged rocks. Ride twisty, uneven paths with steep drops and tight turns. What a rush! Mountain biking is full of thrills, adventures, and no shortage of dangers. Struggling and reluctant Spanish...

Would you have the guts to enter a BMX event? Fast-paced bike races. Crazy jumps off huge ramps. Dirt flying everywhere. What a rush! BMX racing and freestyle are full of thrills, adventures, and no shortage of dangers. Struggling and reluctant Spanish...

They may be small, but these killer bugs can deliver a deadly disease to people with their blood-sucking bites. There's no question that tsetse flies are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for...

They may be small, but these killer bugs can deliver deadly diseases to people with their blood-sucking bites. There's no question that mosquitoes are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for struggling...

They may be small, but these creepy bugs can deliver a deadly disease to people through their bites. There's no question that kissing bugs are dangerous insects. Their gross features and amazing abilities make them the perfect topic for struggling or...

They may be small, but they're aggressive. They have painful stings, and they're known to attack people. Killer bees are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for struggling or reluctant readers too. They...

They may be small, but they're aggressive. They have painful, burning bites, and they're known to attack people and poultry. Fire ants are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for struggling or reluctant...

They may be small, but they're aggressive and powerful. They're able to wipe out entire colonies of honeybees. Asian giant hornets are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for struggling or reluctant...

With giant eyes bigger than their brains and long, skinny tails, tarsiers are animals unlike any other, and curious and reluctant readers alike will be eager to discover how these primates use their unique features. Through carefully leveled text,...

With huge claws and nose ringed by tentacles, star-nosed moles are animals unlike any other, and curious and reluctant readers alike will be eager to discover how these mammals use their unique features. Through carefully leveled text, detailed...

With huge noses and webbed hands and feet, proboscis monkeys are animals unlike any other, and curious and reluctant readers alike will be eager to discover how these monkeys use their unique features. Through carefully leveled text, detailed...

With giant teeth that spiral from their mouths, narwhals are animals unlike any other, and curious and reluctant readers alike will be eager to discover how these whales live with this unique feature. Through carefully leveled text, detailed infographics...

With bodies bigger than any other seal and trunklike noses, elephant seals are an animal unlike any other, and curious and reluctant readers alike will be eager to discover how these mammals use their unique features. Through carefully leveled text,...

With wide eyes, ears like sonar dishes, and freakishly long middle fingers, aye-ayes are an animal unlike any other, and curious and reluctant readers alike will be eager to discover how these lemurs use their unique features. Through carefully leveled...

They may be small, but these killer bugs can deliver a deadly disease to people with their blood-sucking bites. There's no question that tsetse flies are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for...

They may be small, but they're aggressive. They have painful, burning bites, and they're known to attack people and poultry. Fire ants are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for struggling or reluctant...

They may be small, but these creepy bugs can deliver a deadly disease to people through their bites. There's no question that kissing bugs are dangerous insects. Their gross features and amazing abilities make them the perfect topic for struggling or...

They may be small, but they're aggressive. They have painful stings, and they're known to attack people. Killer bees are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for struggling or reluctant readers. Kids...

They may be small, but these killer bugs can deliver deadly diseases to people with their blood-sucking bites. There's no question that mosquitoes are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for struggling...

They may be small, but they're aggressive and powerful. They're able to wipe out entire colonies of honeybees. Asian giant hornets are dangerous bugs. Their gross features and amazing abilities make them the perfect topic for struggling or reluctant...

They have black and orange skin, forked tongues, and they wander around deserts, looking for prey. Gila monsters are one of a kind animals with unique features that make them a captivating high-interest topic. Take readers on an adventure through these...

They have muscular tails, large, serrated teeth, and spend their days wandering islands, ready to attack prey with venomous bites. Komodo dragons are powerful predators with unique features that make them a captivating high-interest topic. Take readers...

They have powerful limbs, long bodies, and spend their days submerged in murky water, waiting to pull unsuspecting prey into violent death rolls. Crocodiles are powerful predators with unique features that make them a captivating topic. Take readers on...

They have color-changing skin, eyes that can look in opposite directions, and creep along tree branches, looking for food. Chameleons are one of a kind animals with unique features that make them a captivating topic. Take readers on an adventure through...

They have sharp eyes, long, scaly bodies, and lurk in swamps, waiting to capture prey in powerful jaws. Alligators are fearsome predators with unique features that make them a captivating topic. Take readers on an adventure through these massive...

They have dragonlike spines, razor-sharp teeth, and creep along tree branches, ready to leap into the water below if a predator appears. Iguanas are one of a kind animals with unique features that make them a captivating topic. Take readers on an...

I JUST WANT DESSERT! What would happen if you took it to the extreme and ate only chocolate? This Spanish translation is a humorous, fact-based cautionary tale that shows the effects of too much sugar and bad nutrition on your body--and your social...

I JUST WANT DESSERT! What would happen if you took it to the extreme and ate only chocolate? This Spanish translation is a humorous, fact-based cautionary tale that shows the effects of too much sugar and bad nutrition on your body--and your social...

I'M NOT GETTING SHOTS! What would happen if you took it to the extreme and never got vaccines? This Spanish translation is a humorous, fact-based cautionary tale that shows the effects of not getting vaccinated against infectious diseases. For kids who...

I'M NOT GETTING SHOTS! What would happen if you took it to the extreme and never got vaccines? This Spanish translation is a humorous, fact-based cautionary tale that shows the effects of not getting vaccinated against infectious diseases. For kids who...