There's nothing safe or boring about math, as this adventurous, amusingly-illustrated activity book amply proves. In the fictional scenarios here, solving math problems accurately is the only thing that can help readers 9 to 12 as they battle vampires, survive a tornado, escape from a mummy's tomb, and save the Earth from a stray asteroid. Helpful hints and precisely explained solutions are included, along with a four-panel pull-out poster in the back of the book.