Alien Encounter Math Grade 04 - Mission Masters Author:McGraw-Hill Companies Exciting activities that encourage young mathematicians to challenge themselves and their math skills to overcome the perils of villains and other planetary threats. Skills reinforced include: analyzing and solving real-world problems, estimation, measurements, geometry, whole numbers, fractions, graphs and patterns. The Game: Alien space wa... more »nderers from Whatzitooya have landed on Earth and it doesn't look good! If the Whatzitooyans find that they can survive on our planet, they will take over towns across the nation. You must stop them! The Mission Masters is a trademark of the McGraw-Hill Companies (c) 1999.« less