This study examined factors that have been shown to predict middle school students' (grades 6–8) task values (utility value related to engaging with science in the future). Using structural equation modeling students' (N = 1015) responses to a career aspiration survey were analyzed to determine relationships among the factors. The model of best fit showed that factors related to science capital (Exposure to STEM Practitioners, STEM Experiences, and Tool Access) are key in shaping both students' Science Achievement Value and their Perceptions of Family Task Achievement Value. Further, both Science Achievement Value and Perceptions of Family Science Achievement Value have a direct positive effect on youth Future Science Task Value. These findings document important ways in which youth access and exposure to science experiences, tools, and to scientists lay the groundwork for science motivation and ultimately to valuing future science tasks.

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This study examined the relationship between students' (N = 229) concepts of size and scale and students' achievement in science and mathematics over a 3-year period. Size and scale are considered one of the big ideas in science that permeates disparate science and mathematics content areas, yet little is known about the relationship between students' conceptualization of size and scale and students' achievement in science and mathematics. The study used a modified panel longitudinal design to follow the same class of students over a 3-year period. The goal was to explore whether understandings of size and scale are related to achievement in mathematics and science.

This study examined the degree to which individual differences in students' (N = 232) concepts of size and scale are explained by factors such as students' innate sense of number, out‐of‐school science experiences, exposure to size and scale instruction, gender identities, and racial/ethnic identities. There is increasing emphasis being placed on the use of crosscutting concepts to promote deep learning in science. A multiple linear regression indicated students' racial/ethnic identities, experiences with scale outside of school, and exposure to size and scale instruction significantly added to the prediction model. Results from this study can both inform the movement toward incorporating crosscutting concepts into pedagogy as well as inform educators, administrators, and other stakeholders of the factors that may shape students' understanding of the cross‐cutting concept of scale, proportion, and quantity.