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Transcript
00:00Hi kids! Today we will learn more on number patterns. We will make patterns according to pattern rules and find out pattern rules. So, let's get started!
00:20Here is a pattern.
00:24Let's give term numbers to the pattern first.
00:30So, we have assigned the term numbers to the terms.
00:36We have 6 terms.
00:39Term number 1 is 3.
00:43Term number 2 is 6.
00:47Term number 3 is 9.
00:50And so on.
00:53Now, what is the pattern rule for this growing pattern?
00:59The pattern rule is start at 3 and keep on adding 3.
01:06Term number 1 is 3.
01:09Term number 2 is 3 plus 3 equals 6.
01:15Term number is 6 plus 3 equals 9.
01:21Term 4 is 9 plus 3 equals 12.
01:27And so on.
01:30One more pattern rule is there.
01:34Every term is term number multiply 3.
01:39Term number 1 is 3 multiply by 1.
01:45Term number 2 is 3 multiply by 2.
01:50Kids, if we have the pattern rule, we can find the next terms easily.
01:57Like here, the next term would be 18 plus 3 equals 21.
02:05Also, next term would be 7 multiply by 3 equals 21.
02:15Let's move to the next example.
02:20Here we have another growing pattern.
02:24Let's find out the pattern rule for this growing pattern.
02:315 is 1 more than double of 2.
02:3611 is 1 more than double of 5.
02:41So, the pattern rule is start at 2 multiply with 2 and plus 1.
02:502 multiply by 2 plus 1 we get 5.
02:565 multiply by 2 plus 1 we get 11.
03:0211 multiply by 2 plus 1 we get 23.
03:0923 multiply by 2 plus 1 we get 47.
03:16The next term would be 47 multiply by 2 plus 1 we will get 95.
03:25If we have the pattern rule, we can find any number of next terms.
03:33Now, let's make another pattern.
03:37Let the pattern rule be start at 10 multiply each number with 2.
03:45So, let's make the pattern.
03:48Next term would be 10 multiply by 2 equals 20.
03:55Next term would be 20 multiply by 2 equals 40.
04:01Next term would be 40 multiply by 2 equals 80 and so on.
04:09Now, let's make a shrinking pattern where we have the pattern rule.
04:17Start at 100.
04:20First, minus 5.
04:23Then, minus 10.
04:26Now, let's make the pattern.
04:30First term is 100.
04:33Next term would be previous term minus 5.
04:39100 minus 5 equals 95.
04:45Next term would be previous term minus 10.
04:5195 minus 10 equals 85.
04:58For the next term, again, we have to minus 5.
05:0385 minus 5 equals 80.
05:08Now, we will minus 10.
05:11So, the next term would be 80 minus 10 equals 70.
05:16Now, again, we will minus 5.
05:20So, the next term would be 70 minus 5 equals 65 and so on.
05:28So, kids, now you know what is term numbers.
05:33What are terms and how to make patterns if you have the pattern rule.
05:39Now, let's identify pattern rules in some more patterns.
05:47So, here we have a pattern.
05:50Let's identify the pattern rule here.
05:53Think.
05:55It starts at 3 and every next term is 3 more than the previous term.
06:03So, the pattern rule here is plus 3 as the first term is 3.
06:11And the next term is 3 plus 3 equals 6.
06:16Next term is 6 plus 3 equals 9.
06:21Next term is 9 plus 3 equals 12 and so on.
06:29Now, let's answer a few questions based on what we learned on number patterns.
06:38Annie writes five lines on her diary for first day.
06:44Then, each day she wrote three more lines in her diary.
06:49Then, how many lines will be there in her diary on the fifth day?
06:55Let's record it like this.
06:59So, 17 lines will be there on her diary on the fifth day.
07:06Let's move to the next question.
07:11Sam had seven pencils on Monday.
07:15From Tuesday, he got two pencils on each day from his dad till Thursday.
07:24How many pencils does Sam have on Thursday?
07:29If you record it like this, you will find a pattern.
07:33And you will get to know that Sam will have 13 pencils on Thursday.
07:40As you started with seven and keep on adding two till Thursday.
07:46So, there will be 13 pencils on Thursday.
07:52So, kids, now you know a lot about patterns and pattern rules, identifying pattern rules, etc.
08:02Now, you may go ahead and take a quiz to learn more.
08:06Bye-bye.