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The purpose of this Warm-up is to elicit the idea that the size and the number of unit fractions can help us compare fractions. Students can see that the two diagrams have the same-size parts, but they cannot see how much of one diagram is shaded, prompting them to think about the number of shaded parts. While students may notice and wonder many things about these images, what fractions could be represented by the partially hidden strip is the important discussion point.
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En cada pareja de fracciones, marca la fracción que es mayor. Explica o muestra tu razonamiento.
En cada caso, usa el símbolo > o el símbolo < para que la afirmación sea verdadera. Explica o muestra tu razonamiento.
Si te queda tiempo: Escribe un número en el espacio del numerador de la fracción para que la afirmación sea verdadera. Explica o muestra tu razonamiento.