Main idea and details

Every paragraph has a secret. One big idea that holds everything else up. Let's find it!

The main idea is what a text is mostly about. The details are facts and examples that support the main idea and tell us more about it.

Think of it like a table. The main idea is the tabletop. The details are the legs that hold it up. Take away the legs, and the whole thing falls!

Let's try it. Here's a paragraph called Ocean Survivors. Sea otters have clever ways to survive in the cold ocean. Their fur is the thickest of any mammal, so it keeps them warm. They use rocks as tools to crack open crabs and clams. And when they sleep, they wrap themselves in kelp, so they don't drift away.

So how do we find the main idea? First, look at the title. Next, read the first and last sentences. Then ask, what do most of the sentences talk about?

Fur, rocks, kelp. Each one is a way otters survive. Those are the details. And they all point to one main idea: sea otters have clever ways to survive in the cold ocean.

Now let's build our table. Thick fur, that's one leg. Rock tools, leg two. Kelp blankets, leg three. And on top, the main idea. Strong and steady!

But watch out! Otters use rocks is just one detail. It's only one leg of the table. The main idea has to cover the whole paragraph.

So remember: the main idea is what a text is mostly about. Details hold it up. And to find it, check the title, the first and last sentences, and what most sentences say.