The purpose of this activity is for students to learn the value of a quarter and to find combinations of coins that have the same value as a set of quarters. Look for ways students use what they know about tens and ones and counting by 5 and by 10 as they reason about different ways to represent the same value in cents. Listen for ways students make connections between the value of a coin and the number of coins needed to represent a given value (MP8).

It would be helpful for students to have access to real coins or plastic coins, but if they are not available students can cut out coins, using the money blackline master.

This activity uses MLR7 Compare and Connect. Advances: representing, conversing.

• “¿Hay otra manera de formar esta cantidad usando todos los tipos de moneda?” // “Is there another way to make this amount, using all the different coins?”
• “¿Cómo puedes usar un quarter para encontrar la misma cantidad?” // “How can you use a quarter to help you find the same amount?”

• Share and display the different ways students used coins to show a value of 80¢.
• “¿En qué se parecen y en qué son diferentes los grupos de monedas?” // “What is the same and what is different between the groups of coins?”
• “¿Por qué es útil usar quarters para formar un valor determinado?” // “What is helpful about using quarters to make a certain value?” (You can use fewer coins.)
• Invite previously identified students to show how they used quarters each time to find values made with fewer coins.

The purpose of this activity is for students to find the values of sets of coins that include quarters and to make connections between the value of a coin and the number of coins needed to represent a given value. As students reason about how to represent a given value with coins, listen for the language they use to describe the values of the coins. Some students may consider starting with a coin that has the greatest value because they can reach the total faster. Others may show what they know about place value, using dimes and pennies to show a number of ten cents and one cents (MP7).

• “¿Como sabes que usaste el menor número de monedas?” // “How do you know you have used the fewest number of coins?”
• “¿Hay alguna forma en la que podrías cambiar un grupo de tus monedas por 1 moneda que valga la misma cantidad de centavos?” // “Is there a way you could swap out a group of your coins for 1 coin that's worth the same amount of cents?”

• Invite previously identified students to share how they found the value of Elena's coins.
• “Cuando tenemos un grupo de monedas de diferentes valores, ¿qué estrategias usan para encontrar el valor total?” // “When we have a group of coins with different values, what are some ways you use to find the total?” (Grouping like coins, starting with the greatest value first, counting on by 5 or by 10.)
• As time permits, invite students to share how they counted Tyler's coins.