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UNIT 5 Real Numbers, MODULE MODULE 9 Exponents, Real Numbers 8.NS.1.1, 8.NS.1.2, 8.EE.1.2 and Scientific MODULE MODULE10 Notation Exponents and Scientific Notation 8.EE.1.1, 8.EE.1.3, 8.EE.1.4 CAREERS IN MATH Astronomer An astronomer is a scientist who studies and tries to interpret the universe Unit 5 Performance Task beyond Earth. Astronomers use math to At the end of the unit, check calculate distances to celestial objects and out how astronomers use to create mathematical models to help them math. understand the dynamics of systems from stars and planets to black holes. If you are interested in a career as an astronomer, you should study the following mathematical subjects: • Algebra • Geometry • Trigonometry • Calculus © Houghton Mifflin Harcourt Publishing Company • Image Credits: Larry Landolfi/Getty Images Research other careers that require creating mathematical models to understand physical phenomena. Unit 5 265 Preview UNIT 5 Vocabulary Use the puzzle to preview key vocabulary from this unit. Unscramble

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