The 35-year-old’ mother’s assault on the boy broke his skull and killed him in August 2014.
She was initially jailed for 8 years, but had her sentence extended after an appeal by the prosecution.
The fatal incident took place when the 4-year-old boy was made to recite numbers in Malay.
Angry that he could not recite the numbers from 11 to 18, Noraidah punished him by pushing him repeatedly, causing him to hit his head on the floor.
Then, she stomped on the child and lifted him up and pushed him against a wall.
The boy later died from a fractured skull and bleeding in the brain.
Noraidah had started abusing the boy in 2012, when he was just 2 years old.
On one occasion when he was found scribbling on a sofa, she pushed him and stepped on his ribs when he fell, and twisted his hand.
She later brought him to hospital, and doctors found that the child had fractures in his elbow, calf and 4 ribs, as well as multiple bruises.
The boy was placed in the care of Noraidah’s brother and sister-in-law by Child Protective Services in July 2012.
Four months later, Noraidah moved in with the family.
Two years later, in 2014, Child Protective Services closed the case after no further reports of abuse, and Noraidah moved out of the home with her two children.
In upper her sentence, Deputy Public Prosecutor Kow Keng Siong said that the lower court was wrong in accepting Noraidah’s “personality aberrations” as mitigating factors.
He said that personality aberrations did not amount to a recognisable mental disorder and people must not be entitled to lenient sentences because of their impulsive or aggressive nature.