10 Awesome End of Year Math Project Ideas — Mashup Math Click here to get a free worksheet and answer key with 10 Math Puzzles, Riddles, and Brain Teasers for Kids Ages 10 and Up! 4.) Pirate-Themed Escape Room by Teresa at Description: Your class has been captured by a group of swashbuckling pirates! They must use their math skills to escape. Image via 5.)