Cultivating children's creativity and imagination is fundamental to preparing them for an increasingly complex and uncertain future. Engaging in creative learning enables children to think independently and critically, work cooperatively, and take risks while actively engaged in meaningful projects. While current trends in education, such as maker movements and computer science education, are dramatically expanding children's opportunities for engagement in creative learning, comparatively few empirical studies explore how creative learning can be integrated into elementary school curricula. In this paper, we investigated five key design strategies for integrating creative learning in school curricula through computer programming activities. The five design strategies, drawn from design meetings with in-service teachers and two pilot studies, comprise (1) prepare an object-to-think-with for specific curricular ideas, (2) find a context that provokes a leap of ideas within a disciplinary framework, (3) facilitate tinkering through disciplinary inquiry, (4) pair students and establishing developer and researcher roles, and (5) provide feedback to connect computer programming projects to disciplinary ideas. Implementing these strategies with mixed-method analysis indicated positive support for the efficacy of these design strategies. We also provide insights into difficulties with integrating creative learning into school curricula.