Grab this free self-checking maze activity for surface area of triangular prisms — perfect for classwork, homework, early finishers, or a sub plan! Students solve 7 problems and shade their answers in a 4×4 grid. If their shaded path connects ★ START to ★ FINISH, every answer is correct. No teacher marking needed. What's included:1 student worksheet (7 problems + maze grid)1 teacher answer key with full working and highlighted solution path