Dec. 11 Cover Image

Dec. 11 Math Mystery Year Puzzle: Birthday of Rita Moreno

December 11 of the Mystery Year is the birthday of Puerto Rican actress, singer, and dancer, Rita Moreno. To find the year, students solve clues that include order of operations, division by a unit fraction, distance on a coordinate grid, measurement conversions, and reasoning skills in a real-world context. This engaging puzzle is perfect for middle school or high school students to use any time.

Your PDF download includes:

1-page printable student puzzle
2-page digital version with horizontal layout and larger print
3 pages of Teacher Notes including step-by-step solutions, historical notes, and more
1-page How to Use History-Mystery Puzzles