http://www.somatematica.com.br/cgi-local/forca.cgi
http://www.profcardy.com/calculadoras/aplicativos.php?calc=2
http://www.mathsisfun.com/fractions_addition.html
http://www.funbrain.com/cgi-bin/ttt.cgi
http://rachacuca.com.br/quiz/2717/equacao-de-1-grau/
Nenhum comentário:
Postar um comentário