1. Topic-
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2 x 2 Digit Multiplication |
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Objectives-
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1. Correctly multiply a 2-digit number by a 2-digit number
2. Create and solve word problems involving 2x2 digit multiplication
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Materials and Aids-
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Farmer hat
Poster boards illustrating 23 chickens, 18 cows and 25 cats.
Index cards
Individual dry erase boards |
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Procedures/Methods-
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A. Introduction-
1. Ask who likes to eat eggs. Explain that you love to eat eggs
and that you have decided to become a farmer so that you can have
all the eggs you want.
2. Put on farmer's hat and have students come to the floor with their
dry erase boards so that you can tell them about all your chickens
and how many eggs they lay.
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B. Development-
1. Demonstrate with poster that you have 23 chickens and they each
lay 14 eggs a week.
2. Demonstrate "scratch, scratch, lay an egg" method.
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C. Practice-
1. Repeat with 18 cows that each give 52 gallons of milk per year.
Students follow along on whiteboards.
2. Repeat with 25 cats that each had 12 kittens. Students work the
problem on their whiteboards.
Repeat with other barnyard themes as needed.
3. Students work in pairs to create their own word problems involving
2x2 digit multiplication. Students write down a word problem on an
index card and place the card in a box.
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D. Independent Practice-
1.The teacher pulls cards from the box and reads them to the students.
Students work independently to solve the problems.
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E. Accommodations (Differentiated Instruction)-
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F. Checking for understanding-
1. Go over answers with students.
2. Were all the word problems multiplication problems? How can we
tell? |
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G. Closure-
1. Why did we do word problems? Why don't we always just give the
number problem?
2. If we are only multiplying by one digit, do we need to do "scratch,
scratch lay an egg"?
3. Copy notes into math journal on how to multiply 2x2 digits.
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7. Teacher Reflection-
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This is a slightly revised version of a lesson that I did in class.
It was well-received by the students and helped them to make connections
between word problems and the number problem to be solved. Writing
their own word problems helped them to think about how a multiplication
problem sounds different from an addition or subtraction problem.
It encouraged them to focus on the meaning behind the words. |
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