Skip to playerSkip to main contentSkip to footer
GenX-Education
  • 9/28/2024
Transcript
00:00That is much better. Now you can hear me. Today we are in the commutative property fish
00:17tank. This means we are going to learn about the commutative property. I have some story
00:22problems I need your help answering. Will you help me? Awesome! Let's dive in and take
00:28a look. Here is a word problem that we need to figure out. Let me read the problem. I
00:36have 3 red fish, 2 yellow fish, and 7 orange fish. How many fish do I have in all? Let's
00:44read that one more time. I have 3 red fish, 2 yellow fish, and 7 orange fish. How many
00:52fish do I have in all? In this problem we don't have just two numbers to deal with.
00:58We have three numbers. This might seem difficult, but I know we can do it. We will need to add
01:03three different addends, or numbers, together. To start I will write an equation to see the
01:09problem better. We have 3 red fish, plus 2 yellow fish, plus 7 orange fish, equals the
01:19number we do not know yet. The question is asking how many fish we have all together
01:24which means we need to add them together. To help me out on this problem we could use
01:29blocks or anything to represent the fish we are adding together. I do not have blocks
01:34in my fish tank, but I do have my fish. Come on over guys! Wow, this looks just like our
01:42equation. We have 3 red fish, plus 2 yellow fish, plus 7 orange fish. Awesome! We need
01:50to add them together. We have 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12. I have 12 fish
02:03all together. This tells me that 3 plus 2 plus 7 equals 12. Great job! This is way cool
02:11stuff! Wait, what are the fish doing? Oh no! The fish have moved positions. Do you think
02:19that changed what the answer will be? We can find out by counting them again. Count
02:25the fish again and tell me if it still equals 12. You are correct, the answer is still 12
02:35fish in all. This is what we call the commutative property. It does not matter what order the
02:41numbers are in, we will still get the same answer. So even if it looked like this, we
02:48will still get the same answer of 12. So when we are adding, the order will not change
02:53the answer. Awesome job guys! Let's do one more problem. Today I found 6 big seashells,
03:022 small seashells, and 3 medium seashells. How many seashells do I have in all? Hmm,
03:09lots of shells. Let's read it one more time. Today I found 6 big seashells, 2 small seashells,
03:17and 3 medium seashells. How many seashells do I have in all? Now when it says big shells,
03:24small shells, and medium shells, those are just sizes. We want to know how many we have
03:28in all, so the sizes do not matter to us when finding the answer. We can start again by
03:34writing an equation. We have 6 big seashells, 2 small seashells, and 3 medium seashells.
03:44The equation is 6 plus 2 plus 3 equals the number we do not know yet. Instead of counting
03:51all the seashells one by one, let's count on to help us find the answer. We have 6,
03:58so put that number in your head. Now there are 2 dots representing the 2 and 3 dots representing
04:04the 3, so to count on we start with 6 in our head and count 7, 8, 9, 10, 11. Counting on
04:13twice we get the answer of 11. Great job kids! Now just like the last question, what
04:20happens if we change up the equation? Will the answer be different in our addition problem?
04:29The answer will be the same, so 2 plus 6 plus 3 still equals 11, just like it did in our
04:35equation before. Great job kids! We learned some amazing stuff today. Keep on learning
04:43and we will see you next time. Goodbye!