I explain what a derivative and anti-derivative are, then explain how I use them to come up with the equations to figure out the speed and displacement a ship needs to break ice of different thicknesses. All of this is 2nd-year university math. The English teacher is the only one I have lost in the explanation.When I am done, I do one last quick explanation of how extremely thick ice isn’t broken this way because it requires an insanely large ship.“If you want to break thick ice, there are special ships built that drive through it in reverse and use the propellers to chop up the ice, but that is extremely slow ... You can see now why testing for the next grade is a bit useless. I should be doing university courses, not grade 9 or 10.”The school staff is a bit stunned by my presentation. It was long enough in my presentation that some of them came out of their shock and started asking questions about ice breakers. I answer a couple but notice the time, and know many of them need to. At first we tried to hide it from Jeff, but after a while our outbursts couldn't wait. Jeff would run to his bedroom and slam the door while we continued to scream at each other. And then Marshal would storm out of the house. I'd go to Jeff's room and ask to be allowed in. Only a few times did he leave me standing out there until I sulked down the hall to my bedroom and cried. But most times I was allowed in and sat on the side of his bed and told him I was sorry and that things would be all right. Marshal and I still loved each other and always made up, so what I told Jeff was sincere.However, before we knew it, Marshal and I would be fighting again and I'd be consoling Jeff.One day Jeff said, "Why is Dad so mean?" Hon, he's not mean. He just doesn't feel the way I do." He doesn't want a baby?" How did you know about a baby?" C'mon, Mom, I'm 18 years old. Sheesh, don't you guys even know what you're saying when you're yelling?"For the first time, I saw my son as an adult. I knew he.
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