[This paper is part of the Focused Collection in Investigating and Improving Quantum Education through Research. ] We discuss how research on student difficulties was used as a guide to develop. validate. and evaluate a Quantum Interactive Learning Tutorial (QuILT) to help students learn how to determine the completely symmetric bosonic or completely antisymmetric fermionic wave funct... https://www.learningepistemology.com/product-category/shaving-cream/