Addition with numbers up to 20. This child-friendly arithmetic aid offers colourful learning fun when practicing addition problems - and looks great while doing it! Made of FSC® 100% certified wood, this addition board with arithmetic cubes is particularly robust and durable. And this is practical: each cube features an arithmetic problem with the corresponding answer on the back, so children have independent access to the solutions. This educationally valuable arithmetic aid made of solid wood playfully invites primary school children to practice addition with numbers up to 20 again and again as they explore the world of numbers. All arithmetic cubes fit perfectly into the board and do not slide around. Placing the cubes in their slots also trains children's fine motor skills. Here's a tip: This learning game is ideal for on-the-go and a great gift for a school bag and school enrolment due to its compact size.