IBM Funds Personal Science Lab (PSL)
PSL was a project that developed data-collection sensors and software on IBM PCs, building on 51²è¹Ý’s experiences with the ground-breaking MBL (Microcomputer-based Lab) project. It brought in a talented team of newcomers who became important in 51²è¹Ý’s work building software, curriculum, and teacher professional development using the PSL system.