A metric ton is a really big way to measure things that are very heavy. It's kind of like measuring your candy in pieces vs. in pounds. A metric ton is much bigger than a regular ton, which is why we use it for really heavy things like cars, big rocks, or even ships. It's called "metric" because it's based on a system called the metric system, which is used in many countries around the world. Think of it like a giant scale that can weigh things that are as heavy as a big elephant or even a whole herd of them! So if someone says something weighs a metric ton, just know that it's a really, really heavy thing!