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Identify Number Patterns (In Arithmetic and the Multiplication Table)
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What you will learn from this videoWhat you will learn
- That patterns aren't just found in shapes, they're also found in numbers.
- That we can see patterns in equations and in the multiplication table.
- That we can use number patterns to check our math and share things with friends.
- Discussion Questions
Before Video
Is 91,934 even or odd? Explain.ANSWEREven. I only look at the last digit, 4, which is even.
Odd. I only look at the last digit, 1, which is odd.
ANSWEREven. Zero in the ones place means that the number is a multiple of 10, so it must be even.
Yes. Even numbers can be shared equally among two people.
No. Odd numbers cannot be shared equally among two people.
After Video
If I have 4 socks and you have 8 socks, can we pair them all up if we put them together?ANSWERYes! 4 can be put into pairs, and 8 can be put into pairs, so if we put them together, we are just adding pairs.
Yes. All my socks can be put into pairs except one. All your socks can be put into pairs except one. Together, we have several pairs of socks and two unpaired socks. Those unpaired socks become a pair together!
ANSWERI started with an even number of socks that can be put into pairs. Then I took away an odd number of socks, which means that I take away some pairs and also break up a pair to take one sock. That means that I have an unpaired sock left over, so the amount of leftover socks is an odd number. The rule is: even – odd = odd.
I get an even number! I can think of it as an odd number of groups of even numbers (which can be paired).
I get an odd number. For example, if I have 3 groups that each contain 5 socks, the socks in each group make 2 pairs with 1 sock unpaired. When I combine the groups, there are 3 unpaired socks, which still leaves 1 unpaired.
- Vocabulary
- Pattern DEFINE
Something that follows a rule.
- Combined DEFINE
Added together.
- Pair DEFINE
Two of the same thing.
- Sequence DEFINE
When one thing follows another according to a rule.
- Equation DEFINE
Mathematical expressions that are equal to the same number.
- Multiplication table DEFINE
A tool that helps us quickly see the product of two numbers.
- Even DEFINE
Can be put into two equal groups, or into groups of two.
- Odd DEFINE
Cannot be put into two equal groups, or into groups of two.
- Pattern DEFINE
- Reading Material
- Practice Word Problems
- Practice Number Problems
- Lesson Plan
- Teacher Guide
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Level 1
Does adding an even number to an even number make an even or odd number? Give an example.
Level 2
Circle the numbers that are divisible by 2 and underline the numbers that are divisible by 5. 88, 95, 100, 314, 360, 225
Level 3
Is the product of 5 and 8 even or odd?
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