A Whole Year of Curiosity. One Curious Mailbox.

Give your curious learner a whole year of educational adventures with our complete 12 Pack Learning Letter Bundle!

This bundle includes all 12 Learning Letters in the collection, taking kids on adventures through science, nature, animals, weather, the human body, our planet, outer space, and more.

Each Learning Letter is written especially for curious kids and filled with fascinating facts, colorful illustrations, vocabulary, hands-on learning, and activities designed to turn big questions into exciting discoveries.

Your 12-Letter Bundle Includes:

Ocean Depths
Dive beneath the waves to discover the mysterious layers of the ocean, incredible deep-sea creatures, underwater exploration, and more.

Incredible Landforms
Travel across Earth's surface to explore mountains, valleys, canyons, volcanoes, islands, and the natural forces that help shape our planet.

Wonders of Space
Blast off beyond Earth to explore our solar system, planets, stars, space exploration, and incredible wonders beyond our world.

Weather Wonders
Discover clouds, rain, wind, storms, and other amazing weather while learning what happens in the atmosphere above us.

Rainbows
Explore how sunlight and water work together to create rainbows and discover the science behind their beautiful colors.

Simple Machines
Discover the six simple machines, how they make work easier, and where kids can spot them in the world around them.

Insect Life Cycles
Discover how living things grow and change while exploring fascinating life cycles and the stages insects experience along the way.

Hibernation
Find out what happens when animals prepare for winter, which animals hibernate, and how hibernation differs from brumation & torpor.

Amazing Homes & Habitats
Travel through incredible habitats to discover where animals live, what they need to survive, and the amazing homes they build and use.

The Human Body
Take a look inside the human body to discover important organs and body systems and how they work together.

The Five Senses
Explore sight, hearing, smell, taste, and touch while discovering how our senses help us experience the world around us.

Amazing Things Our Bodies Can Do
Discover some of the incredible things happening inside our bodies every day - from endurance and growing to remembering, balancing, blinking, breathing, and more.

Inside Every Learning Letter:

• An educational letter created for curious young learners
• Fascinating facts and kid-friendly explanations
• Vocabulary and new concepts to discover
• A hands-on Activity of the Month
• A Monthly Challenge to keep the learning going
• A collectible badge
• Themed stickers

A Whole Year of Real Learning. Real Mail.

There’s something extra exciting about finding mail with your name on it!

With the complete collection, your child can experience 12 different educational adventures, each designed to inspire new questions, discoveries, and conversations.

Purchase the bundle once and receive all 12 Learning Letters - no subscription required.

Twelve fascinating topics. Twelve educational adventures. A whole year of curiosity.

Perfect for homeschoolers, curious kids, supplemental learning, unit studies, screen-free learning, gifts, or families who simply want to make learning a little more exciting.

Recommended for curious explorers ages 4+.