Constructionist learning is characterized by three principles: "learning-by-making,""holistic learning," and a freedom to choose learning styles. This paper describes a project with second grade homeschooling students that tested the feasibility of using HyperCard as a medium for constructionist learning. The "worlds" project took 6 weeks. The first 2 weeks were spent learning the basics of HyperCard/HyperTalk language and developing a simple prototype world. In the second phase of the project, students designed and created a world based on some subject they were studying. Two examples are described which demonstrate that students can successfully program in the HyperCard/HyperTalk environment to create stacks that mimic various worlds. The project demonstrated that constructionist ideas can be applied successfully in early education and that the HyperCard environment nourished student design styles. (Contains seven references.) (AEF)