Double entry table IKEA, also called contingencies, is data tables that refer to two variables. In the header of the rows we establish the categories or variable values while in the main column the other variables are added. At the confluence between the first row and the first column we find the data corresponding to both variables.
Double entry table IKEA gives us statistical information of two related events to compare the different values that we obtain. They are called tables or tables of double entry because it organizes the topics in two directions to where we must take the look to know what it is, what to do or what value it represents. The double entry boxes allow us to organize the information in horizontal and vertical columns concentrated in one place all the information obtained from a reading.
The double entry table IKEA is also used to create games for elementary school children orienting them to solve problems that will allow completing the different boxes in the table. This type of tables in primary encourages numerical literacy and improves the relationship of the youngest with mathematics. The following table can be used for the little ones to collect the number of policemen, firemen and soldiers in a drawing.