The Value of BillsUnit of Study 7: Money and TimeGlobal Concept Guide: 2 of 4

Content DevelopmentA common mistake is the incorrect use of the $ and ¢. Remind students that the dollar sign and cent sign are not used at the same time.

Finding the values of bills in the denominations of $5, $10, and $20 has been added to the 2nd grade standards for Florida, therefore this will not be reflected in the current Go Math materials.

Day 1 Essential question: How can I count the value of bills? Sample engage question:

Give students money in denominations of $1, $5, $10, $20, and $100. Have them calculate the value of their bills.

Show “count bills” and have students determine the value of each person’s money. Then have students discuss why they think each child organized their bills the way they did and which student was more efficient. Discuss efficient strategies for finding the value of bills. Lesson idea “Do I Have Enough?”. Teacher prepares ahead of time by taping the picture card on the outside of an envelope. Inside the envelope put bills that either are less than, equal to, or more than the amount of the item. Record their thinking in their journal of the strategy used to solve and whether they can purchase the item or not with the given bills. (Directions on worksheet.)Questions you could pose:If you have three ten-dollar bills, one five-dollar bill and two one-dollar bills, how

much money do you have?

By the end of Day 1, students will be able to count the value of bills. Possible daily journal questions.

Day 2Essential question: How can I solve real-world problems involving groups of bills?Explicitly teach that the decimal point separates the dollars

from the cents.Sample engage question:

Jefferson left his house with three ten-dollar bills, two five-dollar bills, and a one-dollar bill. When he came home he had $7. How much did he spend?

Additional problems you can use.

By the end of Day 2, students will be able to solve real-world problems involving groups of bill. Possible daily journal questions.

Enrich/Reteach/Intervention

ReteachIf students struggle, you may want to use the number

line or a hundred board.

EnrichI have $75 in my pocket. What bills could I have?Washington bought 3 bags of apples that were $7

each. The cash register has a $1 button and a $5 button. How could you use the cash register to determine the total price of Washington’s apples?