these have a lower level of detail and are made of wood of a slightly lower quality

And here you have to be careful

A round puzzle where the pieces

Stinky Head and Vampire Man Baby Kid

farverig hale

Einstein E=mc2 Timeline these have a lower levelThis metal puzzle is shaped like Einstein's revolutionary formula: E=mc2. Can you separate the two parts that make up each of the three challenges and put them back together? Einstein's famous theory enabled people to understand the relationship between mass and energy. Even if you don't understand the details of the formula itself, this puzzle offers exactly the kind of brain exercise Einstein would have loved!