Discussing Validation of 3D Character Animation Demonstrating Ushiro-Ukemi Pedagogical Progression. - Mauro Cesar Gurgel de Alencar Carvalho; Bruno Martins Carvalho; Felipe Leal de Paiva Carvalho; Heidi Dias Oliveira Junior; Gerson Gomes Cunha; Luiz Landau; Estélio Henrique Martin Dantas (HCI (23), 2011)