As the country grew, each census required greater effort than the last. That problem led to the invention of the punched card.
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Prince George's Community College
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A través de juegos y tareas domésticas, los padres pueden enseñar a sus hijos habilidades básicas de matemáticas, como contar, algo de geometría y pensamiento algebraico.
Through games and household tasks, parents can help their children learn basic math skills like counting, geometry and algebraic thinking.
