The Value of Bills Unit of Study 7: Money and Time Global Concept Guide: 2 of 4

Content Development  A 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 2 nd 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.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.count 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.)“Do I Have Enough?” 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.daily journal questions.

Day 2 Essential 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 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.daily journal questions

Enrich/Reteach/Intervention Reteach  If students struggle, you may want to use the number line or a hundred board. Enrich  I 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?