Sinopse: Challenges provides Coursebooks that can be completed in one year, giving students a clear sense of progress Informative and engaging topics that involve teenagers in their learning Unique features on word building and sentence patterns Characters that promote positive values and use real spoken language. Activities for building learner strategies for independent learning Magazine at the back of the Students Book to support mixed ability classes Strong grammar and skills sections give students confidence in using the language A picture dictionary in Levels 1 and 2 that is easy and fun to use A unique teachers package gives total support and maximum flexibility
Biografia: Michael Howard Harris é um matemático estadunidense, que trabalha com teoria dos números e formas modulares no contexto do programa Langlands.
