When you spot the wounded little creature, you have no idea that he's an alien. Trying to help, you find yourself piloting a UFO into space. Strange new planets, terrifying aliens, and even an interstellar war are all steps on the path to solving the mystery of The Alien Encounter. This intriguing story is a totally engaging new way to build arithmetic skills. The clever mystery is filled with math problems; solve the equations to work your way along the pathway that runs through the book, bringing you one step closer to solving the riddle at the end!

Math puzzles are a great way for children to practice their math facts, and this series can provide hours of mysterious fun. What do you need to work on - addition and subtraction or multiplication and division? There is a beginner and advanced level for each combination. The beginner level of addition and subtraction offers single-digit problems, while the advanced offers practice up through 12. Beginner level multiplication and division offers practice up through the 9 facts and advanced offers practice up through the 12 facts. Each puzzle is an adventure maze - students begin at the arrow and choose the correct numbers to complete simple equations in the pattern to make their way through the maze. Each puzzle brings you one step closer to solving the mystery that is presented within the theme. One puzzle is on each page and there are 35 puzzles in each book.