Fig. 1From: Exploring the roles of students’ home resources and attitudes towards science in science achievement: a comparison of South Korea, Turkey, and the United States in TIMSS 2015Fourth Graders’ Science Achievement in TIMSS in South Korea, Turkey, and the United States. Data indicate the average science achievement scores by country and year (Martin et al., 2012; Martin et al. 2016a). The TIMSS is administered once every four years since 1995. South Korea and Turkey did not participate each year that it was administered. The TIMSS science portion was not offered to fourth grade students in 1999. The international average is the average score of all participating countries’ science achievement scores accepted by the TIMSS organizersBack to article page