The study is aimed is to produce a valid learning device based on local culture, effective, and practical to improve students study outcome on energy concept in a living system. The study is conducted at SMP N 4 Telaga Gorontalo District using the development method of the Four-D device. The findings show that the development device is valid, effective, and practical to use. The device validity is presented from expert' validation result, which stated that the device is ready to use with minor revision. The device is claimed practical based on observation result learning implementation for two weeks which is 97,5%, 99,3%, with good criteria, also student questionnaire declared that the device is practical to use with the percentage of 92,14%. The learning device effectiveness is shown with the increasing number of tested study result, which is 0,8 with n-gain high criteria and the result of observation students activity,which is 86,92% with good criteria.