There are more fish on the left. Fewer on the right.
Words we use
more — a larger amount
less or fewer — a smaller amount
Try saying it: "There are more on the left. There are fewer on the right."
Size vs. count rule
Watch out — your eyes can fool you. Three big apples can look bigger than five small ones. But count is count! Five is more than three, even if the three pieces look bigger. Always count.
Try it yourself
Open the Compare balls exercise. You see two groups of balls and click on the one that has more.
When that's easy, look at The same amount too — for the times when neither pile has more.