Amazing material that introduces abstract maths concept to children as young as 4 without them even knowing it The Square is composed of 8 wooden blocks which fit together in a trinomial pattern.Early Educational Toys Cultivate children's visual ability, cognition and understanding of three-dimensional space. To the foundation for the development of later math skills, really the best baby educational games.The purpose of the material is not to teach maths, but instead, to provide a challenge for a child's ability to find patterns & relationships.The child is not asked to understand the formula, but is using the Square in a mathematical way.The child will build up a predisposition to enjoy & understand mathematics later.It provides the child with tangible experience of the way in which the Square can be divided & sub-divided.The material is presented as a sensorial activity. It is presented like a three dimensional puzzle.Safety , Non-toxic, tasteless, against strong and unbreakable, round edge to ensure your kids safety play.WHAT'S A TRINOMIAL Square? A box with:Three wooden Squares: red, blue, and yellow. Eighteen square based prisms. 3 red and black, the same height as the blue Square. 3 red and black, the same height as the yellow Square. 3 yellow and black, the same height as the red Square. 3 yellow and black, the same height as the blue Square. 3 blue and black, the same height as the yellow Square. 3 blue and black, the same height as the red prism. Six black rectangular based prisms, whose 3 dimensions correspond to the edge of the red, blue, and yellow Squares.Three wooden Squares: red, blue, and yellow. All the pieces, once assembled, form a Square of a trinomial (a+b+c)3The square of the trinomial is painted on the lid.Direct Educational Goal : Cultivate children's visual abilityIndirect Educational Goal : 1, cultivate children's observation and concentration.2, Cultivate children's logical thinking ability.3, Hand - eye coordination action.4, It the foundation for the development of later math skills.type: ATypes: Professional EditionColour:As shownMaterial:woodenSize:9 x 9 x 11cmPackage Contents:1 set of binomial sensory toysOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.