Captain Haley Comet is looking for a few good "mathstronauts" to help her maintain peace in the galaxy. They'll need a special set of skills to deal with the calculating aliens of the planet Calculus. Thrilled readers will want to immerse themselves in this diverting storyline and use their knowledge of fractions, symbols, operations, and more math concepts to avoid an interstellar war. Bright illustrations add excitement to the sci-fi story, while math problems are an integral part of the imaginative plot

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