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2-N-4-2

Page history last edited by Tashe Harris 6 years, 2 months ago

2.N.4.2 Use a combination of coins to represent a given amount of money up to one dollar.

In a Nutshell

Students entering second grade have practiced identifying coins, writing a number with a cent symbol to describe the value of a single coin, and determining the value of a collection of pennies, nickels, and dimes. In second grade, they will build upon this knowledge by using coins to represent a given amount up to one dollar. They continue to use ONLY the cent sign. Second graders also begin to use quarters in combination with pennies, nickels, and dimes when representing a given amount of money.

Student Actions	Teacher Actions
Develop strategies for problem solving by analyzing the parts of problems involving representing a given amount of money using a combination of coins and identifying entry points to begin the search for a solution. Students will use corresponding multiple representations (verbal, physical, symbolic, pictorial, graphical, tabular) when appropriate. They will find methods to verify their answers in context and will always question the reasonableness of solutions. Develop a productive mathematical disposition by exploring and communicating a variety of reasoning strategies to think through problems involving representing a given amount of money using a combination of coins. Students will apply their logic to critique the thinking and strategies of others to develop and evaluate arguments, including making arguments and counterarguments and making connections to other contexts.	Elicit and use evidence of student thinking by constantly assessing progress and adjusting instruction to support learning. Facilitate meaningful mathematical discourse among students to build shared understanding of using a combination coins to represent a given amount of money by analyzing and comparing student approaches and arguments.
Key Understandings	Misconceptions
There could be multiple ways to use a combination of coins to represent a given amount of money. Identify and know the value of a quarter. Use quarters, dimes, nickels and pennies to show a given amount. Use the ¢ symbol properly. Decomposing and recomposing numbers	The value of a coin is related to its size; the larger the coin, the greater the value. The number of coins in the collection is the only determinant of its value. A nickel is a quarter or vice versa. Counting the coins is the same as counting their value.