Pilar, a 7-year-old, knows that even though liquid poured from one glass into a bowl looks different, it is still the same amount of liquid. Pilar has achieved ________ in her thinking.

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The Answer of Pilar, a 7-year-old, knows that even though liquid poured from one glass into a bowl looks different, it is still the same amount of liquid. Pilar has achieved ________ in her thinking.

Pilar, a 7-Year-Old, Knows That Even Though Liquid Poured from One