Despite 20 years of engineering experience, I cannot solve my son’s high school math homework

By Ba Hung    November 10, 2025 | 11:25 pm PT
I was excellent at math during my school years, able to solve complex derivatives and integrals with ease, but now I can hardly remember any of it.

I am an engineer with nearly 20 years of experience. When people hear the term "engineer," they assume I must be proficient in math, particularly in subjects like derivatives and integrals, which are the foundation of engineering. However, when my 12th-grade son recently asked for help with his calculus homework, I realized I had forgotten everything.

Looking at my son’s notebook, I found myself staring blankly at the formulas, unable to recall how any of them worked. I tried to recall my past success in math, where I had scored 9 or 10 in exams, but my mind was blank. My son, surprised, asked, "Dad, you’re an engineer, but you don’t know calculus?" I could only smile awkwardly.

A group of engineers working together. Photo from Unsplash

A group of engineers working together. Photo from Unsplash

In high school, I was able to solve complex derivatives and integrals using multiple methods. I believed that this knowledge would be foundational for my engineering career. Yet, after nearly 20 years in the field, I’ve never needed to use calculus or derivatives. What I rely on are logical thinking, problem-solving skills, and precision, not advanced mathematical formulas.

Working in mechanical engineering and automation, I mainly use calculation and simulation software or tools that have built-in algorithms. While math helps me understand general principles, I rarely need to "do the math" myself. In other words, studying math is important, but it’s not necessary to delve so deeply into areas that most students will never use in their future careers.

I do not dismiss the value of learning advanced math. It hones our thinking, patience, and logical reasoning. But I wonder: Is it necessary for every student to master complicated derivatives and integrals, only for most of them to forget these concepts a few years later?

My son, like many 12th-grade students, struggles daily with a heavy math curriculum. They study intensively, solving dozens of problem types, and preparing for exams. However, in the end, they will likely be like me, storing that knowledge away in their memory, never to use it again.

I believe education, especially in mathematics, needs to become more practical. We should still teach derivatives and integrals, but only to the extent that students understand the concepts and their basic applications. The rest of the time should focus on teaching how math operates in real life, such as calculating bank interest rates, using probability for decision-making, or applying geometry in design and technology. More importantly, we should teach students how to think critically, not just memorize formulas.

Some may argue that mathematics strengthens logical thinking, and that greater difficulty leads to greater intellect. However, I believe true understanding comes from learning that connects to real-life applications and personal motivation. A student who understands how math helps them in everyday life will likely appreciate it more than one who studies just to pass exams.

*Readers' opinions are personal and do not necessarily match VnExpress' viewpoints.

 
 
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