DEVELOPMENT AND VALIDATION OF A PROGRAMMED INSTRUCTION PACKAGE FOR LEARNING PROBABILITY IN SENIOR SECONDARY SCHOOL MATHEMATICS CURRICULUM Evbakoe Pedro IKUEREYE (Ph.D)1 & Festus Osadebamwen IDEHEN (Ph.D)2 This study was on the development and validation of a programmed instruction package for learning probability in senior secondary school mathematics curriculum in Benin metropolis. The study adopted production-oriented descriptive survey …