Count each object once
Counting each object exactly once is how your child learns to trust the answer a count gives. In kindergarten they will count groups of up to 20, and soon after they will add by counting all the objects in two groups, or by counting on from one of them. If a finger skips an object or taps one twice, the answer comes out wrong even when the method is right, so this habit protects all of that work.
In this video, your child will learn to count, saying one number for each thing.
The lesson stops at each question for your child's answer.
Three problems, each a little harder
Each problem is worked step by step. Your child will solve the last one before Bobby shows how.
Example 1
How many flowers?
Example 2
How many cars?
Your child's turn
How many crayons?
The three key steps
- 1Point to each one just once.
- 2Say one number for each one.
- 3Don't skip one, and don't count one twice.
Mistakes to listen for
- Saying the numbers faster than they point, so the words run ahead and four blocks get counted as six.
- Counting the same object twice in a scattered pile, after losing track of which ones are done.
- Skipping an object at the end of a row or in a corner, and giving a total one too small.
The lesson shows every step, so your child sees why it works. Read our parent's guide to counting each thing once: one number for each object →
Is your child ready to practice what they've learned?
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More Pre-K Numbers & Place Value, with questions your child answers along the way.
Questions parents ask
Does my child need an account to watch?
No. You can watch this on any device at any time. If your child would like to practice counting each thing once: one number for each object, and you'd like parent-friendly reports on your child's progress and growth, you can join Bobby's Math Club for unlimited free practice.
What happens when my child answers a question?
A right answer gets a cheer, and the lesson carries on. If your child isn't sure, they can tap "I don't know yet", and Bobby gives the answer and shows another example. Nothing is scored or stored.
Is this the same lesson that's on YouTube?
Yes. Here, the lesson stops at each question and waits for your child to answer. On YouTube, each question stays on screen for a few seconds, and then the lesson plays on.
Where can I learn more?
There's a short, kid-friendly lesson like this one for every Pre-K to 5th grade math skill, all in our video library. Our parent's guide to counting each thing once: one number for each object has more on where kids get stuck and how you can help at home. In the club, your child practices at just the right level, about five minutes a day, and you get parent-friendly reports as they grow. Learn more about how it works →
Practice counting each thing once: one number for each object
Questions at your child's level, about five minutes a day, on counting each thing once: one number for each object and whatever PK-5 skills they need to develop. Unlimited practice, free forever.
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