About this video
Sal looks at different ways of counting flowers, mice and ladybugs and picks the right ones. When you count, every object gets a number, you don't skip any objects, and you don't skip any numbers.
You'll be able to
- count objects without skipping any of them.
- say the numbers in order without skipping a number.
- spot when someone has counted the wrong way.
Key words
- count in order
- Saying the numbers one after another, 1, 2, 3, without missing any.
- skip
- To miss something out, like jumping over a flower or a number.
Transcript
- [Voiceover] How do we count the flowers? So, this first choice, they go one, two, three, and then they don't count this one and then they skip it and they go four, five, six, and then they skip this one again, and then they say seven, eight. That's not how you count flowers!
You'd say this is four, this is five, six, seven, eight, nine, 10. So, this first choice is not right. Now, the second one looks better. One, two, three, four, they didn't skip this one, five, six, seven, eight, nine, 10. That one looks good so I'll click right over here and check my answer.
How do we count the mice? Let's see, one, two, this isn't the third mouse! This is the second mouse! This is crazy, this isn't right. All right, this one over here. One, two, three, four, five, six, seven, this is right. Up here they skipped the number two, this should be the second mouse, not the third mouse!
All right. Let's keep going. Type the missing numbers. It says count the ladybugs. Type the missing numbers in the boxes. All right, this is ladybug number one. Two, then let me type three, then let me type four. It's a lot of fun. Count the flowers. Type the missing numbers in the boxes.
This is flower number one, flower number two. Just gonna type that right in there. Check it, lemme do one more. How do we count the flowers? So, we saw one like this a few questions ago. One, two, three, four, five, six, seven, eight, nine, 10. That one looks good.
This one, just like the last time, they skipped, actually they skipped the same ones. This wouldn't be the right way to do it. So, we select this one right here, and then we're done.
Video © Khan Academy, used under CC BY-NC-SA. Watch on Khan Academy. Puzzicle is not affiliated with Khan Academy.