Authors: Ron Stevens, Carole Beal, and Marcia Sprang had their paper published in the Proceedings of the 17th International Conference on Computers in Education, Hong Kong: Asia-Pacific Society for Computers in Education.Titled Tracking the Development of Problem Solving Skills with Learning Trajectories this manuscript includes analyses of problem solving approaches for 1,650 chemistry students using multiple measures. The manuscript can be found in our publications list or link here