Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Count On! (Addition) Counting on is faster Than counting all you see. Think of numbers you can add. Use the count on strategy! You counted on from 6 And thought 7 and 8. I clapped the number sentence: 6 + 2 = 8! I'm starting with the number 5. Count on. It's up to you. Tell me what the number is When the clapping's through. Ready? 5 [clap] I'm starting with the number 7. Count on. It's up to you. Tell me what the number is When the clapping's through. Ready? 7 [clap][clap][clap] You counted on from 5 And thought the number 6. I clapped the number sentence: 5+1 =6! You counted on from 7 And thought 8, 9 and 10 I clapped the number sentence: 7+3=10! I'm starting with the number 6. Count on. It's up to you. Tell me what the number is When the clapping's through. Ready? 6 [clap] [clap] Counting on is faster Than counting all you see. Think of numbers you can add. Use the count on strategy! The Turnaround Game (Addition) It's time to take two numbers, And add and rearrange. If you switch the adding order The answer will not change. 1+2 is 3. 2+1 is 3. Change around the numbers that you see. The sum will always equal 3! Either way you add them, The answer's still the same 1+2 is 2+1. Let's all play the Turnaround Game! 2 + 4 is 6. 4 + 2 is 6. Change around the numbers. Switch and mix. The sum will always equal 6. Either way you add them, The answer's still the same 2 + 4 is 4 + 2. Let's all play the Turnaround Game! 3 + 5 is 8. 5 + 3 is 8. Change around the numbers. Calculate. The sum will always equal 8. Either way you add them, The answer's still the same 3 + 5 is 5 + 3. Let's all play the Turnaround Game! 4 + 6 is 10. 6 + 4 is 10. Change around the numbers, once again. The sum will always equal 10. Either way you add them, The answer's still the same 4 + 6 is 6 + 4. Let 's all play the Turnaround Game! Adding Doubles (Addition) When we add two numbers That are the same, We call it adding doubles and we play a game! 2 children jump And jump some more. 2 more join them. Now there are 4. Jump while you add. Jump to the beat. Jump on the playground, Not in the street! 3 children jump And some do tricks. 3 more join them. Now there are 6. 1 + 1 = 2. 2+2=4 3 + 3 = 6. Let's add doubles. Add some more! 4 children jump. They just can't wait. 4 more join them. Now there are 8. 4 + 4 = 8. 5 + 5 = 10. Keep on jumping While we add again! 1 child jumps. Her name is Sue. 1 more joins her. Now there are 2. 5 children jump And jump again. 5 more join them. Now there are 10. Keep on adding doubles While you jump to the beat. Jump on the playground Not in the street! Count Back! (Subtraction) When you take a number And then you subtract, Use the count back strategy. It works. That's a fact! 12 - 2 = 10. We counted back together We counted back 2. Start from 8. And now subtract 1. Let's count back together Let's count back one. 7 8 - 1 = 7. We counted back together We counted back 1. When you take a number And then you subtract, Use the count back strategy. It works. That's a fact! When you take a number And then you subtract, Use the count back strategy. It works. That's a fact! Start from 12. And now subtract 2. Let's count back together Let's count back 2. 11 10 Start from 20. And now subtract 3. Let's count back together Let's count back three. 19 18 17 20 - 3 = 17. We counted back together We counted back 3. When you take a number And then you subtract, Use the count back strategy. It works! That's a fact! We Are a Family (Addition/Subtraction) We are a group of numbers. We are a family. We are all related facts. Watch and you will see. Each family has three numbers To add or to subtract. These numbers make four sentences. It's time to name each fact. If 1 + 2 is 3. Then 2 + 1 is 3. So 3 - 1 is 2, And 3 - 2 is 1. These are our related facts And now our family's done! We are a group of numbers. We are a family. We are all related facts. Just watch and you will see. If 4 + 5 is 9. Then 5 + 4 is 9. So 9 - 4 is 5, And 9 - 5 is 4. These are our related facts It’s time to learn some more! We are a group of numbers. We are a family. We are all related facts. Just watch and you will see. If 4 + 6 is 10. Then 6 + 4 is 10. So 10 - 4 is 6, And 10 - 6 is 4. These are our related facts Can you think of more? We are a group of numbers. We are a family. We are all related facts. Just watch and you will see. The Commutative Song (Multiplication) When it's time to multiply Sing the commutative song. You can switch around the numbers While you sing along. 8 x 6 or 6 x 8. The answer's still the same. It's 48! 5 x 7 or 7 x 5. The answer's still the same. It's 35! There's really no denying, It's very satisfying, That this rule for multiplying Is really clarifying! 4 x 6 or 6 x 4. The answer's still the same. It's 24! 2 x ll or 11 x 2. The answer's still the same. It's 22! There's really no denying, It's very satisfying, That this rule for multiplying Is really clarifying! Three Simple Rules (Multiplication) There are three very simple rules That will help you multiply. They're the 0, 1, and 10 rules. And they're easy to apply. 0 has a simple rule. Let me tell you why. The answer's always 0, When you multiply. 0x3=0 10 x 0 = 0. The answer's always 0 When you multiply. Number 1 has a simple rule. I know that you'll agree. Any number multiplied by 1, Is itself, you see. 4 x 1 = 4. 1 x 9 = 9. Any number multiplied by 1, Is itself, you see. Number 10 has a simple rule, When you multiply by 10. All you do is take the number And put a 0 at the end. l0 x 5 = 50. 8 x 10 = 80. All you do is take the number And put a 0 at the end. There are three very simple rules That will help you multiply. They're the 0, 1, and 10 rules. And they're easy to apply. The Five-Zero and Doubles Tips (Multiplication) Here are two tips To help you multiply. They're the five-zero and doubles tips. Listen, then give them a try. 5, 0, 5, 0 Multiply by 5. The answer always ends With a 0 or 5! 5 x 4 is 20. 5 x 5 is 25. 5 x 6 is 30. 5 x 7 is 35. 5 x 8 is 40. 5 x 9 is 45. 5 x10 is 50. 5x11 is 55. 20, 25, 30, 35, 40, 45, 50, 55 5, 0, 5, 0 Multiply by 5. The answer always ends With a 0 or 5! When you double your fun, There's twice as much to do, 'Cause adding doubles is the same As multiplying by 2! 9 + 9 is 2 x 9 or 9 x 2. What's the answer? It's up to you! 10 + 10 is 2 x 10 or 10 x 2. What's the answer? It's up to you! 11 + 11 is 2 x 11 or 11 x 2. What's the answer? It's up to you! 12 + 12 is 2 x 12 or 12 x 2. What's the answer? It's up to you! When you double your fun, There's twice as much to do, 'Cause adding doubles is the same As multiply by 2! These are two tips To help you multiply. They're the five-zero and doubles tips. Now, give them a try. It Happens by Design (Multiplication: Patterns with Nines) It happens by design If you multiply by 9 The digits in the answer Always add up to be 9. Look at this first pattern, A multiple of 9. It happens by design The answer totals up to 9 That 9 x 2 = 18 And the 1 and 8 add up to ...9 Look at this next pattern, A multiple of 9. It happens by design The answer totals up to 9. That 9 x 4 = 36 And the 3 and 6 add up to ...9. Look at this last pattern, A multiple of 9. It happens by design The answer totals up to 9. That 9 x 6 = 54 An the 5 and 4 add up to ...9. It happens by design If you multiply by 9 The digits in the answer Always add up to be 9. Meet My Family (Multiplication and Division) Come on and meet my family. Get to know my group of facts so carefully. Meet my family. Study all the numbers you see. When you take 3, 6, and 18 You can practice making facts your new routine! 3 x 6 is 18. And so is 6 x 3. 18 :- 3 is 6. 18 :- 6 is 3. Come on and meet my family. Get to know my group of facts so carefully. Meet my family. Study all the numbers you see. When you take 4, 6, and 24 You can practice making facts and facts some more. 4 x 6 is 24. And so is 6 x 4. 24 :- 4 is 6. 24 :- 6 is 4. Come on and meet my family, Get to know my group of facts so carefully. Meet my family. Study all the numbers you see. Think Multiplication (Division) If you're dividing numbers And don't know what to do. Just use your multiplying skills. And here's a tip for you. 24 :- 3 It's time to calculate. What times 3 is 24? The answer will be 8! Each division sentence Contains a certain clue. It names a multiplying fact, If you think it through. Each sentence has 3 numbers. They are 24, 8 and 3. Just switch the operation It's not a mystery. 6 divided by 3 Is a division you can do. What times 3 equals 6? The answer will be 2! 54 :- 6 Here's your chance to shine. What times 6 is 54? The answer will be 9. Each sentence has 3 numbers. They are 6, and 3, and 2. Just switch the operation To find out what to do. Each sentence has 3 numbers. They are 54, 6 and 9. Just switch the operation And then you'll do just fine.