NY Next Generation Math NY-1.MD.3.c

Math1st GradeTell and write time and money.

The Standard

Count a mixed collection of dimes and pennies and determine the cent value (total not to exceed 100 cents).

New York State Next Generation Mathematics Learning Standards

Teacher's field guide

What Students Need to Do: Students count collections that mix dimes and pennies, with a total no greater than 100 cents. They connect each dime to ten cents, count on by tens and ones, and state the total value.
What Mastery Looks Like: A student counts 6 dimes as 60 cents and then counts on 7 pennies to reach 67 cents. The student records the total as 67¢.
Common Misconceptions: Students may count every coin as one cent or switch between counting by tens and ones inaccurately. They may confuse the number of coins with the collection's value.
How to Assess It: Give the student 7 dimes and 8 pennies in mixed order. Ask for the total value and an explanation of the counting sequence.

Lesson moves

Sort mixed dimes and pennies, count the dimes by tens, then count on by ones for the pennies.
Ask students why eight coins can be worth more or less than another group of eight coins.
Play coin-count relay with collections of dimes and pennies whose totals stay at or below 100 cents.
Count dimes and pennies for a classroom donation jar and record the total in cents.

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