Coming down to earth: Helping teachers use 3D virtual worlds in across-spaces learning situations

1. Muñoz-Cristóbal, J.A.
2. Prieto, L.P.
3. Asensio-Pérez, J.I.
4. Martínez-Monés, A.
5. Jorrín-Abellán, I.M.
6. Dimitriadis, Y.