6C c


Hunger is a serious issue for millions of people all around the world. Yet huge amounts of food go to waste, especially in the developed world. People often buy more than they can use, and this extra food usually gets thrown away.


d


We spend a lot of time in our homes and offices without knowing the quality of the air around us. Air quality, temperature and humidity can seriously affect our sleep, our energy levels and our general health.


e


Most of the 500 million smallholder farmers in the world survive on less than $1 a day. Working in difficult conditions, these farmers could help each other by sharing knowledge and solutions to everyday problems. However, most do not have access to the internet.


6 7


Assess the apps on page 112 by using the appropriate questions in the Focus box. Rate the apps from best to worst. Then compare your ratings with other students.


In groups. Choose an app you know that you think could be improved. Follow the instructions below.


a Compile a list of criteria. b Use assessment questions to identify strong and weak points. c Make a list of areas to improve. d Brainstorm possible improvements. e Make a list of new features and changes.


8 C21


CRITICAL THINKING: Continuous improvement See page 100➝


Take turns to present your ideas and answer questions from the class. Which is the most improved app and why? Have a class vote.


English for the 21st Century • Unit 6 95


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