Cyberchase

This animated series chronicles three kids called the Cybersquad who have many exciting adventures in Cyberspace. Jackie, Inez and Matt are their names. They try to protect Motherboard, the wise, computerized leader of Cyberspace, from the Hacker, who wants to take over Cyberspace and cause chaos everywhere. Once, he even took over Cyberspace by tricking the kids into puting a fake encryptor chip into Motherboard, but the kids beat him.

Digit, a bird who used to work for the Hacker, and Dr. Marbles will always try to help out, the Cybersquad will beat Hacker every time by using logic and guess what the other thing is. Mathematics! With that, the kids can do anything.