摘要：The cognitive abilities of Indonesian students are still low based on The Learning Curve in 2013.The quality of education should be improved.Most Indonesians live in coastal areas,and use snails as alternative dishes.Therefore,snails in coastal areas can be used as a source of learning.Interest in reading Indonesian students is low,so an interesting and easily understood book need to be developed.Then,a draft of the Popular Scientific Book (PSB) was made based on Gastropod Diversity in Coastal Areas.This research is the early stage of development,namely the validation of PSB.The purpose of this research is to test the validity of the product.Validation is done with three experts by giving a validation sheet of PSB.Validation data were analyzed categorization descriptively.Suggestions and comments from validators become the reference for product revisions.Validation complete when obtaining minimum category valid.The results showed coherence;legibility;active and passive sentences;method;applications and implications;definitions and explanations;and other styles the device obtains very valid category.Vocabulary;avoid dubious words;and the format obtains a valid category.Based on the results,the book developed have met the rules of popular scientific writing.
关键词：coastal development;diversity gastropod;popular scientific book
