یہ Publication Issue آپ کی زبان میں موجود نہیں ہے, میں دیکھنے: English (en),
یا گوگل کے ترجمہ کا استعمال کرتے:  

After seeing several examples of Appropriate Technology as they toured ECHO-North America, students will play a card game to review the technologies, plot the location of each one on a farm map, and then design their own invention to assist small-scale framers.