arbol de problemas by anderson rojas jaramillo https://padlet.com/andersonrojas2013/2i19kwgpdae5jrpc en-us 2022-08-20 14:20:06 UTC 2022-08-20 14:21:14 UTC hello@padlet.com andersonrojas2013 https://padlet.com/andersonrojas2013/2i19kwgpdae5jrpc/wish/2266158829 2022-08-20 14:20:39 UTC https://padlet.com/andersonrojas2013/2i19kwgpdae5jrpc/wish/2266158829