Who is the audience? Grade 2 math class/ re-teaching/reinforcement Math-multiplication The focus is...
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Teacher- Introduction Who is the audience? • Grade 2 math class/ re-teaching/reinforcement • Math-multiplication • The focus is on the review/re-teaching of multiplication strategies Objective • The learner will recognize the multiplication sign/ symbol (x). • The learner will be able to explain the connection between multiplication and addition. • The learner will be able to apply the process of multiplication to real world applications. • Montana State Standards : Math- 3rd grade • 3.1.3 Develop multiplication and division concepts, apply number and operation models and strategies, and reason and justify using properties of operations. • 3.1.3.A Describe and use multiple representations for multiplication. 1
Who is the audience? Grade 2 math class/ re-teaching/reinforcement Math-multiplication The focus is on the review/re-teaching of multiplication strategies
Who is the audience? Grade 2 math class/
re-teaching/reinforcement Math-multiplication The focus is on the
review/re-teaching of multiplication strategies Objective The
learner will recognize the multiplication sign/ symbol (x). The
learner will be able to explain the connection between
multiplication and addition. The learner will be able to apply the
process of multiplication to real world applications. Montana State
Standards : Math- 3rd grade 3.1.3 Develop multiplication and
division concepts, apply number and operation models and
strategies, and reason and justify using properties of operations.
3.1.3.A Describe and use multiple representations for
multiplication. 1
Slide 3
Reach for the Moon, and even if you miss youll still land among
the stars!
Slide 4
Before you begin your mission, here are some important symbols
you will see on the voyage that can help you. Use your headphones
and listen to the text being read aloud when you see this symbol.
When you see this picture, you may stand up and try this yoga pose.
Your break should not be longer than 5 minutes. Be sure not to
disrupt others. You may go back and review the previous slide at
any time. stop and think about what you learned before you go on to
the next slide.
Slide 5
Your Mission: Master the multiplication strategies to receive
the aliens gift.
Slide 6
You will take two experienced astronauts with you. When you see
their picture, they will assist you in your mission.
Slide 7
Mission : Checklist You should: Be able to recognize the symbol
for multiplication (X). Be able to use addition to help you solve a
multiplication problem. Be able to use words (groups of) to help
you understand and solve a multiplication problem. Be able to draw
a picture to help you solve a multiplication problem. Be able to
arrive at the correct answer using one of the multiplication
strategies.
Slide 8
Multiplication Matters! 1.You know to add when you see this
sign. + 2. You know to subtract when you see this sign. 3. You are
going to learn to multiply when you see this sign. x
Slide 9
Why does multiplication matter? Multiplication is a faster way
of adding. Since you already know how to add, this will help make
understanding multiplication easier. When you get stuck with a new
multiplication problem, you will be able to use addition as a
strategy to help you figure out the answer. However, your goal will
be to eventually master your multiplication facts. This will make
solving real world problems easier and faster.
Slide 10
Remember this symbol/sign means we are going to multiply.
X
Slide 11
Mission : Checkpoint! 1. What should you do when you see this
math symbol (X)? a)addadd b) subtract subtract c)
multiplymultiply
Slide 12
Remember our goal is to understand what multiplication is and
practice the strategies. Try a little more practice. Add is not the
correct answer because the sign for addition is +.
Slide 13
Remember our goal is to understand what multiplication is and
practice the strategies. Try a little more practice. Subtract is
not the correct answer because the sign for subtraction is - not
X.
Slide 14
I see youve been thinking and practicing and your hard work is
paying off!
Slide 15
This symbol/sign (X) also is another way of saying groups of.
Remember when you see the multiplication symbol/sign you can insert
the words groups of to help you understand and solve the
multiplication problem.
Slide 16
Here is an example: 3X 2 = 3 groups of 2
Slide 17
Lets see if using the words groups of in place of the X symbol
helps us find and understand the answer. 3 X 2 = 3 groups of 2
Slide 18
If we have three groups of two, we can add the groups and find
that the answer is six (6). 3 X 2 = 3 groups of 2 2+ 2
Slide 19
In the previous example, you saw how inserting words groups of
for the sign, using addition, and/or drawing a picture helped you
solve the multiplication problem. Remember: When you get stuck, you
might want to try one of these strategies. 1.Replace the X sign
with groups of to make sense of the problem. 2.Use addition to help
you solve the problem. 3.Draw a picture to visualize the
problem.
Slide 20
Mission: Checkpoint 2 2. What words could you use in place of
the multiplication (X) sign to help you understand and solve the
problem? 3 X 3 = a)multiplicationmultiplication b)tons oftons of
c)groups ofgroups of
Slide 21
Remember our goal is to understand what multiplication is and
practice the strategies. Time for a tune up. Sorry, multiplication
is not the right answer. Please go back for review. Lets
Review
Slide 22
Remember our goal is to understand what multiplication is and
practice the strategies. Time for a tune up. Sorry, tons of is not
the correct answer. Please go back for review. Lets Review
Slide 23
Good thinking! Catching butterflies or math problems takes
practice and focus. 3 groups of 3 = 9.
Slide 24
Lets try another one! This time use addition to come up with
the answer. 6 X 3 = ? 6 groups of 3
Slide 25
How did you do? 6 X 3 = 18 3 + 3 + 3 + 3 + 3 + 3
Slide 26
Mission: Checkpoint 3! 3. Use the addition strategy to help you
solve this problem. 3 X 6 = ? a)3 + 63 + 6 b)6 + 66 + 6 c)6 + 6 +
66 + 6 + 6
Slide 27
Good thinking! Correct. 3 X 6 = 18. So the addition sentence is
6 + 6 + 6 = 18.
Slide 28
Remember our goal is to understand what multiplication is and
practice the strategies. Sorry 3 + 6 = 9. You might want to use the
words groups of to help you understand this problem. 3 groups of 6.
Try Again!
Slide 29
Remember our goal is to understand what multiplication is and
practice the strategies. Sorry 6 + 6 is not correct. Try using the
words groups of to help you solve the problem 3 groups of 6. Try
Again!
Slide 30
We are going to use these strategies to help us understand
multiplication and solve problems until we meet our goal of
mastering our multiplication facts. Here is another example: 2 x 5
= 2 groups of 5
Slide 31
Lets visualize the problem by drawing a picture this time. 2 x
5 = 2 groups of 5 5 + 5 = 10
Slide 32
Mission: Checkpoint 4! 4.Use the strategy of drawing a picture
to help you solve this problem: 2 X 4 = ? a) b) c)
Slide 33
Nice Work! Correct. 2 X 4 = 8. 2 groups of 4 = 8.
Slide 34
Try a different strategy to help you understand the problem.
This time use the words groups of in place of the multiplication
sign to help you understand the problem 2 X 4 = ? The picture you
chose represents 1 group of 4 or 1 X 4 = 4. Try Again!
Slide 35
Try a different strategy to help you understand the problem.
This time use the words groups of in place of the multiplication
sign to help you understand the problem 2 X 4 = ? The picture you
chose represents 2 groups of 3 or 2 X 3 = 6. Try Again!
Slide 36
Now you choose a strategy and see if you can come up with the
correct answer! 3X 5 = ? Hint: choose a strategy
Slide 37
Which strategy did you use? You can also try two strategies and
check your own work! 3 X 5 = 15 3 groups of 5= 15 5 + 5 + 5 =
15
Slide 38
Mission: Checkpoint 5! 5. Using any of your strategies, what is
the answer to this problem: 5 X 3 = ? a)1515 b)88 c)2020
Slide 39
Use a different strategy this time and see if you can come up
with the right answer. But, first lets look at a few more examples.
Hint: Use one of your strategies: addition, draw a picture or use
the words groups of to help you understand the problem. More
Examples
Slide 40
Good thinking! Your practice is paying off.
Slide 41
Lets try another multiplication problem. 2 x 3 = 6 2 groups of
3
Slide 42
Pay attention. Here is another example. 1 x 2 = 2 1 group of 2
Back to checkpoint!
Slide 43
Here is an opportunity to take a break. If you dont need one
continue otherwise, stand up and try this yoga pose. tree pose
Slide 44
Lets try one more! Then, if your ready you can take the quiz.
If your not, you can go back and review! 2 X 4 = ?
Slide 45
How did you do? If you got this right, you might be ready to
take the quiz! 2 X 4 = 8 2 groups of 4 = 8 2 + 2 = 8 Lets Review
Take the Quiz!
Slide 46
Lets practice some more! This time use the strategy of using
words in place of the multiplication sign (X). 2 X 2 = ? 2 + 2
Slide 47
What words could you use in place of the multiplication (X)
sign to help you understand and solve the problem. 2 X 2 = ? 2
______ ___ 2 ? groupsof
Slide 48
How did you do? 2 X 2 = 4 2 groups of 2 = 4 If you thought of
groups of and your answer was 4, good job! If not, go back and
review.
Slide 49
Here is an opportunity to take a break. If you dont need one
continue otherwise, stand up and try this yoga pose. tree pose
Slide 50
Quiz 1. What should you do when you see this math symbol (X)?
a)addadd b) subtract subtract c)multiplymultiply
Slide 51
Remember our goal is to understand what multiplication is and
practice the strategies. Try a little more practice. Add is not the
correct answer because the sign for addition is + not X. Try
Again!
Slide 52
Remember our goal is to understand what multiplication is and
practice the strategies. Try a little more practice. Subtract is
not the correct answer because the sign for subtraction is - not X.
Try Again!
Slide 53
I see youve been thinking and practicing and your hard work is
paying off!
Slide 54
Quiz question 2 2.What is the correct addition problem that
represents 4 X 2 = 8 ? a)2 + 2 + 2 + 2 =2 + 2 + 2 + 2 = b)2 + 2 + 2
=2 + 2 + 2 = c)4 + 2 =4 + 2 =
Slide 55
Way to go high flier! Learning to fly this plane took time and
paid off. Your practice seems to be paying off.
Slide 56
Remember our goal is to understand what multiplication is and
practice the strategies. Time for a tune up. 2 + 2 + 2 = 6. 4 X 2 =
?. In other words, you need four groups of 2. Try Again!
Slide 57
Remember our goal is to understand what multiplication is and
practice the strategies. Time for a tune up. 4 + 2 = 6. You need 4
groups of 2. Try Again!
Slide 58
Quiz question 3 3.Which of the following pictures represents 2
X 1 = ?. a) b) c)
Slide 59
Good thinking! Still wondering whats in the box? Keep
going.
Slide 60
Think about the information below and then go back and try
again. This drawing represents 1 groups of 1 or the multiplication
sentence 1 X 1 = 1. Try Again!
Slide 61
Think about the information below and then go back and try
again. This drawing represents 1 group of 2. The multiplication
sentence 1 X 2 = 2. Try Again!
Slide 62
Quiz- Question 4 4.What is the correct answer to the
multiplication sentence 1 X 3 = ? a)33 b)11 c)66
Slide 63
Nice thinking! Correct! 1 X 3 = 3
Slide 64
Use a different strategy this time and see if you can come up
with the right answer. Hint: Use one of your strategies: addition,
draw a picture or use the words groups of to help you understand
the problem. Try Again!
Slide 65
Quiz Question 5 5. What is the correct answer to the
multiplication sentence 6 X 3 = ? a)99 b)3636 c)1818
Slide 66
Way to go! Plants dont grown overnight you have to work at
taking care of them. Practice your multiplication strategies and
your math skills will grow! Correct answer! 6 X 3 = 18.
Slide 67
Think about the information below and then go back and re-work
the problem. Hint: Use one of your strategies: addition, draw a
picture or use the words groups of to help you understand the
problem. Try Again!
Slide 68
Quiz- Question 6 6.What is the correct answer to the
multiplication sentence 2 X 6 = ? a)3636 b)1111 c)1212
Slide 69
Keep up the good work! Correct answer! 2 X 6 = 12
Slide 70
Use a different strategy this time and see if you can come up
with the right answer. Hint: Use one of your strategies: addition,
draw a picture or use the words groups of to help you understand
the problem. Try Again!
Slide 71
Quiz- Question 7 7.What is the correct answer to the
multiplication sentence 9 X 2 = ? a)1212 b)1818 c)2929
Slide 72
Purr-fect answer! Correct answer! 9 X 2 = 18
Slide 73
Use a different strategy this time and see if you can come up
with the right answer. Hint: Use one of your strategies: addition,
draw a picture or use the words groups of to help you understand
the problem. Try Again!
Slide 74
Mission : Checkpoint! Checkpoint! If you have completed all 5
parts of your mission your ready to land, if not go back for
review. Be able to recognize the symbol for multiplication (X). Be
able to use addition to help you solve a multiplication problem. Be
able to use words (groups of) to help you understand and solve a
multiplication problem. Be able draw a picture to help you solve a
multiplication problem. Be able to arrive at the correct answer
using one of the multiplication strategies. Lets Review! Ready to
land!
Slide 75
Mission : Accomplished! Before heading home, choose which
aliens gift you would like below.