Find equivalent fractions
Seeing that 1/2 and 2/4 are the same amount shows your child that one number can have more than one name. Fractions like these are called equivalent, which means equal. In 4th grade your child uses them to compare any two fractions, and in 5th grade to add fractions with different-sized pieces. At home, it is the moment two 1/4 cups of flour do the job of one 1/2 cup.
In this video, your child will learn to find equal fractions.
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
What is the missing number? 1/2 = ?/4
Example 2
What is the missing number? 2 = ?/3
Your child's turn
What is the missing number? 3/4 = ?/8
The three key steps
- 1Same whole, same amount
- 2Shade new parts to match
- 3Count them for the top number
Mistakes to listen for
- Adding 1 to both the numerator and denominator (the top and bottom numbers), so 1/2 becomes 2/3, which is a different amount.
- Placing 1/2 and 2/4 at different spots on a number line from 0 to 1, as if they were different numbers.
- Thinking 6/6 is bigger than 1 because 6 is a big number, when six sixths make exactly one whole.
The lesson shows every step, so your child sees why it works. Read our parent's guide to finding equal fractions, like 1/2 = 2/4 →
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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 finding equal fractions, like 1/2 = 2/4, 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 finding equal fractions, like 1/2 = 2/4 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 finding equal fractions, like 1/2 = 2/4
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