Translational symmetry

Translational symmetry means that something looks the same when it is moved a certain amount in a certain direction. It's like when you have a toy car and you slide it along the floor. The car still looks the same even though it moved.

For example, imagine a checkerboard. It has black and white squares that repeat in a pattern. If you slide the checkerboard to the left or right, the pattern still looks the same because it is repeated. This is called translational symmetry.

Another way to think of it is like wrapping a present. If you take a piece of wrapping paper and fold it over and over, the pattern on the paper will line up perfectly each time you fold it. This is also an example of translational symmetry.