Dec. 18 Cover Image

Dec. 18 Math Mystery Year Puzzle: Birthday of Christina Aguilera

Singer and song writer Christina Aguilera was born on December 18 of the Mystery Year. Math clues for finding the year involve percent, division to find the average, angle of rotation, and square numbers in a real-world context. This motivational puzzle is great 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
4 pages of Teacher Notes including step-by-step solutions, historical notes, and more
1-page How to Use History-Mystery Puzzles