An experiment with babies showed they recognized addition and subtraction, using puppets and a curtain. When three puppets are hidden, three should reappear. If three don't, babies react overtly. They are interested if their expectations are not met. We still get Canadian tv reception; only PBS would show it stateside.
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An experiment with babies showed they recognized addition and subtraction, using puppets and a curtain. When three puppets are hidden, three should reappear. If three don't, babies react overtly. They are interested if their expectations are not met. We still get Canadian tv reception; only PBS would show it stateside.
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