The 'Common European Framework of Reference for Languages' is like a big book that tells us all about different languages and how we can learn them. Think of it like a map that helps us figure out how good we are at speaking a language and what we need to do next to improve.
In this big book, there are six different levels that talk about how well we can understand, speak, read, and write in another language. The levels are like stairs, where the first level (A1) is like the first step, and the last level (C2) is like the top step.
On each level, there are different things we need to learn and practice to get better at that language. For example, when we start learning a new language, we learn how to say basic things like "Hello" and "Goodbye." But as we get better, we start learning harder things like grammar and vocabulary so we can talk about more complicated topics.
The 'Common European Framework of Reference for Languages' also helps teachers know what to teach their students at each level. This makes it easier for people learning a language to know what they need to learn next, and for teachers to help them get better.
So, just like when we build a tower with blocks, we start with the first block and add more on top until we reach the top, we use the 'Common European Framework of Reference for Languages' to help us climb the language ladder one step at a time!