What BestWife said is one thing (the school just giving a passing grade to the kid, who has a history of being unmotivated. How did they know the project was adequate?).
The mom brought the project in.
When I was a kid, I proudly carried my projects to school. Why didn't the kid carry it? If it was too heavy or large (but it was contained in a shoebox), why wasn't the kid carrying it with the help of the mom? It sounds like the kid wasn't even interested enough to take it with him to school.
The mom admits to gluing the pedestal/base on.
Hello? Why can't the kid glue it himself?
It sounds like it was just one of those pendulum things---just bought for $25. Not much of a project.
The mom admits the kid doesn't care about anything about video games.
Isn't that more of a concern than the project being thrown away?
Aren't parents supposed to role model appropriate behavior for their kids?
And not become verbally/physically abusive and out of control when something goes wrong, especially when it was an honest mistake?
“It is not a sign of good health to be well adjusted to a sick society”.------Krishnamurti