This resource is a fun and educational activity in the form of a crossword puzzle that allows students to practice and reinforce their English number vocabulary, from 1 to 20. Using clues in Spanish or numerical representations, students must correctly write the corresponding number in English within the crossword puzzle. The activity encourages spelling recognition, vocabulary memorization, and the development of logical thinking. It is ideal for elementary English classes and can be used as a review, diagnostic assessment, or supplementary activity.