The (Perception of inverse proportionality of things) test aims to help children in the early stages of life develop mental memory, which depends on understanding, analysis and deduction, and it is one of the stages of mental maturity of the child that helps in highlighting and developing his mental abilities to perceive the relationship between numbers, elements and things, and develop the child’s skills Perceptual and regulate it, because the child’s memory is characterized at this stage as the memory of the mechanism of performance.
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