Four minutes before the fire started, security cameras caught Tata shopping at a nearby Target store. The video was shown to jurors.
Tata has been charged with four counts of murder, three counts of abandoning a child and two counts of reckless injury to a child.
Prosecutors said Tata put the children in harm's way by leaving them alone and going shopping. While she was at Target, a fire broke out in the kitchen when oil in a frying pan on a stovetop burner ignited. Three children were also seriously injured in the blaze.
Tata's attorneys said she didn't intend to hurt the children. Defense attorneys said murder charges are excessive and that when the fire broke out, she tried to save the children, who ranged in age from 16 months to 3 years old.
After the fire, Tata fled to Nigeria but was captured after about a month, returned to the U.S. in March 2011 and has remained jailed. She was born in the U.S. but has Nigerian citizenship.
Shomari Dickerson, 3, Elizabeth Kojah, 20 months, Kendyll Stradford, 20 months, and Elias Castillo, 16 months, died in the fire at Jackie's Child Care on Crest Park at Waypark Drive shortly before 1:30 p.m. on Feb. 24, 2011. Three other children were injured. Tata is standing trial for felony murder first for the youngest of the victims -- Elias Castillo.