



Activity Design Principles that Support Family-Based Engineering Learning in Early Childhood
This paper is about a design-based research (DBR) study that focused on both iteratively developing and improving home-based, engineering design activities for families with preschool-age children and advancing theory about strategies that support engineering design engagement for children and adult family members.

The Role of Balance Scales in Supporting Productive Thinking about Equations among Diverse Learners
This study explores how balance scales support K–2 students’ relational understanding of the equal sign in early algebra.
