This video-based glossary introduces 37 key definitions related to prime and composite numbers. Topics include prime factorization, divisibility rules, modular arithmetic, the Sieve of Eratosthenes, the Fundamental Theorem of Arithmetic, and more. Each short video provides a clear, student-friendly explanation of important vocabulary, making this an excellent classroom tool for instruction, review, or intervention. The interactive format features a searchable sidebar and simple navigation, allow