Elementary / Middle School
A Bustamante, K Begolli, D Alvarez-Vargas, D Bailey, L Richland, UC Irvine
See also here
High School
M Martínez-Muñoz, J Muñoz-Jiménez, MJ García-Gómez Universidad Carlos III de Madrid, I Valiente-Blanco, E Díez-Jiménez, U Alcalá, U Extremadura, U Chile, U Carlos III
Conservation of Angular Momentum
Middle / High School
S Stoops, A Lederman, G Bal, J McMenamy, MIT
See also here