Lesson Six

Objective:  The students  after a lecture and discussion on writing a number sentence, will learn how to solve word problems by writing number sentences and by using problem-solving strategies, with 80% accuracy. 

Vocabulary: bill, coin, equivalent set, penny, nickel, dime, quarter, half dollar (penny = $0.01 or one cent; nickel = $0.05 or five cents; dime = $0.10 or ten cents; quarter = $0.25 or twenty-five cents; half dollar = $0.50 or fifty cents) 

Materials:      

           * Manipulative (play money)

           * Worksheet

           * Internet         

Activities:

1.  Review vocabulary and the value of each coin.

2.  The teacher will write the following word problem on the board:  "Alicia is going camping with the Outdoors Club.  She needs to buy a flashlight for $5.65, a water bottle for $3.39, and bug spray for $2.73.  How much money will Alicia spend in all'?  How much change will she get if she pays with a $20 bill'?"

3.  After writing the word problem on the board, the teacher will introduce the four problem-solving strategies that students need to use in order to solve the word problem.  She will write the four strategies on the board and discuss each strategy as well.

4.   At this point, the teacher will tell the students that today we are going to solve word problems by writing number sentences and by using other types of problem-solving strategies as well. The teacher will tell students that aside from writing number sentences, students can solve word problems by working backwards, by guessing and checking, and by acting the word problem out.

5.  The teacher will write the following word problems on the board:

* a.  John buys a game  for $4.95, a wallet for $8.29 and a key chain for $5.50.  How much does John spend in all? How much change will he get from $20.00?                

* b.  Bibi buys a hat for $3.29, a ball for $2.25 and a T-shirt for $4.49.  How much does Bibi spend in all?  How much change will she get from $15.00?

* c.  The sum of Laura's and Alexander's ages if 25 years.  The difference in their ages is 5 years.  How old are Laura and Alexander?

* d.  Victoria's science class begins at 10:00.  It is over 52 minutes later.  Where are the hands on the clock when the science class is over?

6.  The teacher will tell the students that they need to work on problems 1 - 4 on the board.  After telling the students that they need to write a number sentence to solve problems 1 & 2, she will give students hints as to how to go about solving problems 3 & 4 by using other problem-solving strategies. 

7.  The students will be instructed to completed a worksheet and to work quietly on all of the word problems. In the meantime the teacher will walk around the room and assist the students if they have any questions.

8.  Once the students are through with their worksheet, the teacher will let the students know that they can use their money manipulative while working on the pop quiz to help them count the money.  As the teacher distributes the pop quiz, she will remind the students to keep their eyes on their own paper and that there wi11 be no talking allowed.

Web Activities:

1.  Students will go online and create their own worksheets on money word problems and complete it.

2.  Students can go online and play an interactive money game.

3.  Students will go online to Enchanted Learning and printout any worksheet on money and complete it.

Enrichment Activity:  Worksheet (optional)

Evaluation:  Worksheet & Pop Quiz (Students will complete the worksheet and pop quiz with 80% accuracy)

Home Learning:  Students will make up 10 word problems that involve adding and subtracting money (5 of each) and a worksheet.