Physics Sensei questions & answers
How Do I Know If I’m Memorizing Instead of Actually Learning?
You can solve every homework problem. You know which formula goes where. You’ve done each one twice. But part of you wonders: do I actually get this, or did I just memorize it?
That’s a smart question to ask. Memorizing feels exactly like learning, right up until the test changes one small thing.
Here’s how to know if you’re memorizing instead of actually learning, and what to do if you are.
What’s really going on
Memorizing is remembering a path: this problem, these steps, that answer. It works great, as long as the problem stays exactly the same.
Learning is knowing the idea behind the path. When you understand why each step works, you can handle a problem you’ve never seen, because you can build a new path from the same idea.
Tests almost never repeat a homework problem exactly. They change the numbers, ask for something different, or change the situation. A memorized path breaks. An idea doesn’t.
Why memorizing feels like learning
When you memorize a solution, solving that same problem again feels easy and fast. That feels like you’ve mastered it. And homework usually doesn’t change much from one problem to the next, so the memorized path keeps working.
The test is the first time the problem changes in a real way. That’s when you find out which one you were doing.
Why it’s hard to change
Memorizing is faster. When there’s a lot to get through, learning the why behind every step can feel like a luxury. And memorizing usually works on homework, so there’s no warning sign.
You need a way to check before the test does.
The fix: the twist test
Take a problem you can already solve. Then twist it, and see if you can still do it.
Try this on three problems this week: the twist test
- Pick a problem you solved recently and feel good about.
- Twist 1: change the numbers. Solve it again, notes closed.
- Twist 2: ask for something different. If the problem asked for the speed, find the time instead.
- Twist 3: change the situation. A ramp becomes a flat floor. A push becomes a pull. Ask: What are they asking? What do I know? What’s the big idea?
- If you get stuck on twist 2 or 3, go back to the original problem and explain why each step works. Then try the twist again.
If you can do all three twists, you’ve learned it. If you can only do the first, you’ve memorized it, and now you know exactly what to practice.
What changes
The twist test takes a few extra minutes per problem. But it finds the gaps before the test does.
After a few weeks, you’ll notice something: you need to memorize less, because you understand more. New problems stop looking new.
If you can twist it, you’ve learned it.
Practice problems built for this
On Physics Sensei, practice comes in sets of three: the same problem with new numbers, the same idea with one twist, and a new problem where you have to spot the idea. Every problem is solved step by step, so it’s the twist test, built in. Each one asks you to try it first, and you find out right away exactly where you slipped.
Your next step: pick one problem you feel good about and give it the twist test. Then try a practice set on Physics Sensei.
More questions about studying and grades? See them all here.
Raul, Physics Sensei
