The 50 crossword puzzles are designed to be fun and educational for students in grades 9 to 12--inside and outside of the classroom. Mixing clues from math, science, social studies and foreign languages with clues from movies, music and sports makes each puzzle entertaining. Of course the PHYSICS puzzle mentions "Interstellar" Over half the puzzles are topic-specific such as World War I, the Scientific Revolution, Greek History, Music, U.S. Civil War, World War II, Africa and U.S. States. and All Math. The rest of the puzzles continue the mix of clues from academic subjects and popular culture. Such titles include: All Answers Begin with "C" Females Colors Free printable mini-puzzles are available at www.studentcrosswordpuzzles.com (Puzzles developed by a certified teacher)