People work to earn money. Deciding how to spend money, or whether to save it, requires difficult trade-offs. Read how one young worker decides what to do with ten hard-earned dollars. Fully… More →

Dare to discover why these scenic haunts are on the list of Spooky Sites! The enormous Eastern State Penitentiary in Philadelphia, Pennsylvania, is a looming lockdown…for lost souls! Find out More →

Not all is as it seems at Elder Elm Elementary! Kenji, Gemma, and Leo hear about things moving on their own in the gymnasium. It's scaring the other students there! Is it a ghost? Leaving… More →

Welcome spring! Learn what animals do during the warmer weather of spring. Downloadable Teacher's Notes. More →

The historic St. Augustine Lighthouse in St. Augustine, Florida, is a towering titan…of terror! Find out why this bright beacon makes even the fearless faint. Dare to discover why this wild… More →

Learn what happened during the dramatic 2018 rescue of 12 boys who were trapped deep inside a flooded cave system in Thailand. Fully decodable text features high-frequency words and offers a… More →

Welcome summer! Learn what animals do during the hot weather of summer. Downloadable Teacher's Notes. More →

Prevent the "summer slide" and keep minds active with Crabtree's Summer Backpacks. Each Gold Level backpack includes 7 items: Bilingual Welcome Letter, Two Spanish fiction books, Two Spanish… More →

Find out how sap is harvested from maple trees to make a sweet food. Fully decodable text features high-frequency words, and words with the short i sound combined with p. Also features tips… More →

Learn about the world of tennis and how science is helping the game. You'll read about balls, courts, rackets, statistics, and training, and get a better understanding of how tennis is… More →