英语翻译As stated by Lebow and Wager (1994):°When authentic acti

英语翻译
As stated by Lebow and Wager (1994):°When authentic activity is the model for ppropriate learning activity,the perceptions of the learner and the affordances of the environment represent an integral and inseparable context of learner/environment° (p.241).The Cognition and Technology Group at Vanderbilt (1990b) describe authentic activities as °generative° because the completion of the task requires the students to generate other problems to be solved.They draw a distinction between these authentic tasks and simple word problems that already define the problem,such as:°If you travel 150 kilometers at 90 kph,how long will the journey take?°Compare this simple problem with one described by Reeves and Laffey (1999) in an undergraduate engineering course where the students° task is to plan a mission to Mars,encompassing the design a research station there as well as the creation of a renewable power source to sustain life once a station is established.Such activities guide learning in entire courses of study.They are not provided simply to enable students to practice skills taught in more didactic,content-focused ways.They are integral to the way students approach and study the course,and provide meaning to complex curricula.