MAGNETIC MARBLES TUB PK100 offers a thoughtfully designed, durable resource for hands-on learning. These plastic cased marbles look like colourful plastic balls, but each one contains a magnet so they stick together, hang together and pull towards and away from each other - as a first introduction to the magical world of magnetism they are great fun. Magnetic Wands 50282 are available separately. Supports the following areas of learning: • Understanding the World - magnetism • Maths - counting & sorting • Understanding the World - colour.