I did this remix of ffred's project "3333" http://scratch.mit.edu/projects/ffred/1231128 to add to the training of students in the priorities of the operations also the training in calculation rules with positive and negative numbers. -Click the green flag to reset. -Click the signals to change them and to obtain a correct solution. -Click the equals sign to check the solutions. -You may repeat until get it right. -There are several solutions. -Click on "solution" to see one solution. If I forgot some more solutions, thank you for telling me. ----- -Clique a bandeira verde para recomeçar. -Clique os sinais para os mudar e tornar as igualdades verdadeiras. -Clique no sinal de igual para verificar. -Pode repetir enquanto não acertar. -Há várias soluções. -Clique em "solution" para ver uma solução. - - - - - - - - - - 30/08/2010
