Odd and even numbers
Odd and even numbers are often the first pattern your child spots inside the numbers themselves. The idea comes up throughout later math, from noticing in 3rd grade that any number times 2 is even to checking whether a group can be split fairly between two people. Writing 14 = 7 + 7 also strengthens doubles facts, and knowing that odd plus odd is always even helps your child check answers.
In this video, your child will learn to tell odd numbers from even numbers.
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
Which number is even?
Example 2
Which number is odd?
Your child's turn
Which number is even?
The three key steps
- 1Every dot has a partner? Even.
- 2One left over? Odd.
- 3Even: two equal parts.
Mistakes to listen for
- Judging odd or even by size, thinking a large number like 18 must be odd or every small number is even.
- Pairing objects but skipping one or counting a pair twice, so a group of 10 looks odd.
- Writing an even number as any two addends, such as 12 = 5 + 7, rather than as a double like 6 + 6.
The lesson shows every step, so your child sees why it works. Read our parent's guide to odd and even numbers →
Is your child ready to practice what they've learned?
Bobby's Math Club offers unlimited practice for free.
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More 2nd grade Problem Solving, 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 odd and even numbers, 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 odd and even numbers 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 odd and even numbers
Questions at your child's level, about five minutes a day, on odd and even numbers and whatever PK-5 skills they need to develop. Unlimited practice, free forever.
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