Texas Instruments Calculadora TI Nspire CAS - BR Pode comentar e tira duvidas. Informações: http://education.ti.com/en/us/products/calculators/graphing-calculators/ti-nspire-cx-cas-handheld/tabs/overview Download do software: http://education.ti.com/en/us/software/details/en/7979D50EFB48436EAB4C39DB9B1988F9/ti-nspirecas_pc_update Utilidades educativas: http://tiplanet.org/forum/portal.php#top