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The purposes of this study were:1) Developed problem-based on learning tools in the cultural context of Aceh (PBM-BKBA) who meet the criteria are valid, practical and effective; 2) Described the improvement of communication capabilities mathematics and social skills of students using the PBM-BKBA developed; and 3) Described the process of student answers in solving mathematical communication skills.Research development of 4-D model was done in two stages: 1) the development of learning devices; and 2) testing devices. The subjects in this study were students of class VIII SMPN 1 Muara Batu, while the object is the PBM-BKBA developed, mathematical communication skills, and social skills of students. The results were obtained: 1) The PBM-BKBA that developed have valid criteria, practical and effective; 2) There is an increased ability of mathematical communication and social skills of students using the PBM-BKBA developed; 3) the student answers on trial II trial better than I.

1Boy Crusoe

By Allan Eric

Also published as" A Yankee Crusoe" . A 15 year old hard working and studious farm boy finds the lure of adventure on the seas as a merchant seaman more than he can resist. This is his story. " I was born in a little town in the State of Maine, near the close of the Civil War. My boyhood life did not differ materially from that of the average farmer's son in the remote country districts of New England--except, perhaps, that I read more and thought more. Hard work on the rugged soil, two terms each year in the little yellow country schoolhouse, a day's fishing now and then filled the early years of my life full to over-flowing. " What he gets is enough excitement and adventure to overflow his wildest dreams. How he experiences disaster and uses his wits and knowledge to overcome every problem makes for a great read. - Summary by Phil Chenevert