Toy set for use by children in e.g. urban kinder garden for learning ideas of planting Christmas tree, has tree body made of endless-fibrous blotting paper, where crystals are formed on body after appropriate time

摘要

The set has a tree body (30) made of endless-fibrous blotting paper. Water-repelling hydrophobic sand (10) is made of silicone oil and quartz sand. A phosphate solution (20) is a liquid mixture from phosphates of different crystal length and water in an appropriate ratio. The sand is brought together to form a heap that is introduced into a container, where the solution is filled in a recess produced in the heap to implant the body. Crystals are formed on the body after appropriate time due to absorption of the solution by the body and a slow drying process and volatilization of the solution.