What happens when people say a tongue twister? Do their tongues really twist? To understand tongue twisters, you first need to know how humans make sound. The brain, mouth, lungs, larynx, and vocal words must all work together in order for humans to speak. Featuring TIME For Kids content, this 6-Pack of Spanish books introduces students to the "science" behind tongue twisters. This high-interest title includes detailed photos, stimulating facts, and clear, informational text to engage students as they build their critical literacy skills. The books include text features such as bold font, captions, a table of contents, a glossary, and sidebars to increase understanding, improve academic vocabulary, and prompt critical thinking. This title prepares students for college and career and is aligned with state and national standards. This 6-Pack includes six copies of this title and a lesson plan.