Even though it has been two years since Cooper Harris died in a hot car, his memory lives on with the teachers who interacted with him everyday at Little Apron Academy.

On Thursday morning, those who taught Cooper from the time he was a baby took the stand to provide more insight into what the child was like.

"Cooper was a fun-loving child," Keyatta Patrick said.

Patrick, who helps potty train children as well as help them learn how to use silverware, had been with Cooper since he was in the center's infant room.

VIDEO | Teacher: "Cooper was a fun-loving boy."

According to Patrick, Cooper started talking more towards the end of May. "I was very excited because he was talking he was able to tell us he wanted more," she told the courtroom. "We were able to have more conversations and interactive conversations."

The toddler's teacher even detailed what happened the day before the 22-month-old died, saying Cooper asked for a new diaper after waking up from a nap.

FULL COVERAGE | Ross Harris Trial

Melony Gibson, the center's director, noted the boy's father, Ross Harris, took a picture with Cooper everyday before leaving the daycare, but stopped two weeks before Cooper’s death.

Gibson said when she asked Harris why he stopped, the father said it was because Cooper was "getting older."

The daycare workers also spent the day describing Harris as an engaged parent.

"You knew he loved his son," Azure Hawkins said. "(Harris) interacted (with Cooper). He came back during the day for special occasions."

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On June 18 2014, the day the 22-month-old died in a hot car, it was Cooper’s mom Leanna who went to the daycare at the end of the day to pick him up.

Michelle Gray said the mother was "confused" and "looked frantic" when she was told her son was not at the daycare center.

Ross Harris is on trial facing numerous charges in the death of his son, including malice murder, felony murder and cruelty to children, in the death of Cooper.

PHOTOS | Hot car death trial - Day 5

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