These laminated placemats are the perfect learning tool! The Periodic Table placemat features all elements, atomic weights, valence configuration, crystal structure, etc. They offer a delightful way for children to master new subjects and for adults to brush up on old ones. Each is brightly coloured, measures a full 445 x 300 mm and is custom laminated with a non-glare laminate on the front and a write-on/wipe-off laminate on the back. The back of each placemat features learning exercises based on the front. For example: on the Multiplication table placemat, you'll find the equations from the front without the answers and out of order, making them much more challenging.