"Look at pictures to figure out what item is on top of another."--Publisher's website.

"Xaxon Yellowbearyd was the fiercest Viking warrior of his time. Now a map to his hidden treasure lies in the hands of Radius and Per. Together the cousins must decode the strange numbered grid on the map--and figure out the secret of the Viking's X and Y axes. As bandits pursue them, Radius and Per track down clues and use coordinate geometry in their quest for "treasure of the greatest measure"."--Dust jacket flap.

"The Leafies need your help! Explore their jungle world and help them put on a birthday party for the king. Navigate through the temple ruins and watch out for the giant orangutan, solving math problems and collecting objects along the way"--Page [4] of cover.

"Choose your mode of transport and set off on an adventure that will take you all the way across space. Can you navigate huge roundabouts with space shuttles, or cross bridges guarded aliens? Negotiate pesky road obstructions by solving the math problems correctly. Pick up hidden objects, collect bonus points, and use your mapping skills to zoom backwards and forwards through the book. Incredibly busy and colorful artwork will delight young children,...

Explore some of the most famous shipwrecks deep on the ocean floor, including the Titanic to learn about coordinate planes and the fun ways they can be used! Shipwreck Detectives not only addresses shipwreck mysteries but also reviews different marine technology aids in the exploration and study of shipwrecks.