ಈ Publication Issue ನಿಮ್ಮ ಭಾಷೆಯಲ್ಲಿ ಅಸ್ತಿತ್ವದಲ್ಲಿಲ್ಲ, ರಲ್ಲಿ ವೀಕ್ಷಿಸಿ: English (en),
ಅಥವಾ Google Translate ಬಳಸಲು:  

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.