A tensor is like a box that can be filled with different numbers, like a house made of blocks. You can stack the blocks in all kinds of ways, and the size of the box can also vary. Tensors are boxes that contain a lot of numbers that can be connected together in different ways. For example, a 3D tensor might have 3 stacks, each with 4 rows and 5 columns of numbers. These numbers can be connected together to represent different things, sort of like how different shapes can be made with blocks!