4 - 1- 4 - 2The Fill-In / Word (Hicc) up! Oct. 10, 2011
- 4 - 3Mouse Brain Take-Over / Leslie Makes it Big Oct. 11, 2011
- 4 - 4Chuck with a Sidekick of Brent / Yarn-4-Gold Oct. 12, 2011
- 4 - 5Whammer Anniversary / Rat Trap Oct. 13, 2011
- 4 - 6WordGirl and BobbleBoy / Crime in the Key of V Oct. 14, 2011
- 4 - 7
- 4 - 8
- 4 - 9Have Snob, Will Travel / Tobey's Playground Calamity Jan. 16, 2012
- 4 - 10The Learnerer / Mr. Big's Dinner and a Scam Mar. 23, 2012
- 4 - 11The Birthday Girl's Monstrous Gift / Hal the Haggler Apr. 16, 2012
- 4 - 12WordBot / Mount Rushhere May. 21, 2012
- 4 - 13
- 4 - 14Captain Tangent Returns Nov. 14, 2011
- 4 - 15A World Without WordGirl, Part 1 Dec. 16, 2011
- 4 - 16A World Without WordGirl, Part 2 Dec. 16, 2011
- 4 - 17Have Snob, Will Travel Jan. 16, 2012
- 4 - 18Tobey's Playground Calamity Jan. 16, 2012
- 4 - 19The Learnerer Mar. 23, 2012
- 4 - 20Mr. Big's Dinner and a Scam Mar. 23, 2012
- 4 - 21The Birthday Girl's Monstrous Gift Apr. 16, 2012
- 4 - 22Hal the Haggler Apr. 16, 2012
- 4 - 23Wordbot May. 21, 2012
- 4 - 24Mount Rush Here May. 21, 2012
- 4 - 25Road Rage, Anger, and Fury Jun. 11, 2012
- 4 - 26By Jove, You've Wrecked My Robots Jun. 11, 2012