Main idea

Weather reporters have to give out a lot of information. That's why they use pictures. The pictures help them tell us about the weather without using so many words. Weather reporters need to know where the cold air is. They need to know where the warm air is. They have to know where it is raining and what types of clouds are in the area. Their reports need to be correct, but they also need to be short. The pictures help weather reporters get the information out in a fast way.
Which sentence best describes the main idea of the paragraph?

• Weather reporters need to know where the cold air is
• Pictures help weather reporters get information out in a fast way
• Their reports need to be correct, but they also need to be short
• They have to know where it is raining and what types of clouds are in the area

The earth's surface is constantly changing.  All over the world everyday there are earthquakes, floods and volcanoes that quickly change our world. Some changes are too small to see.  Others cause tremendous damage and costs millions of dollars to clean up.
What is the main idea?

• It is expensive to clean up the damage
• Sometimes we can't see the changes. 
• The Earth's surface is always changing.

I can't wait until this weekend! We’re going to my grandparents’ house and my entire family will be there. I will spend most of my time playing games with my cousins. We always have such a good time together! The day goes by so fast, and by the end we are all exhausted... but we still don’t want to leave!
What is the main idea?

• Weekends are times to travel.
• The author enjoys spending time with her family.
• The author's grandparents live far away.
• The author is sad to leave her cousins.

Dolphins are very smart animals.  They even have their own language.   They talk to each other with clicks, whistles, and grunts.  Scientists have been studying this dolphin language.  They hope that in the future, people and dolphins will be able to talk to each other.This paragraph mainly tells:

• how dolphins talk to people
• how smart dolphins are 
• how dolpins are different from fish
• which scientists are studying languages

If you are feeling sad, you can make yourself feel better by doing a few simple things. You can take a walk (or get another form of exercise), you can talk to a friend, or you can write down your feelings. Writing down the good things in your life will help too. Doing something good for someone else will also help you feel better. If you still feel a little sad, act happy. It works like magic to make you feel better!
What is the main idea?

• Sometimes people feel sad.
• You should do good things for others.
• We're not always happy.
• There are many ways to make yourself feel better. 

You should determine the main idea by combining the supporting details.

• True
• False

What is the main idea?

• Its the authors point of view
• Is what the passage is mostly about
• It is the sequence of the story.

Sharks can lose up to 30,000 teeth in their lifetime. Sharks have teeth arranged in rows inside their mouths. These teeth do not have roots like human teeth do, so they fall out easily. When a shark takes a powerful bite into its food, several teeth are lost. When these teeth are lost, new ones push forward from the back rows to replace them. Luckily, sharks continually grow new teeth to replace the thousands they lose.

• What shark teeth look like.

• Sharks lose many teeth over their lifetime.
• Sharks are carnivorous predators. 

Benjamin Franklin invented many things that made life easier in the late 1700’s.  He invented the lightning rod that saved many homes from fires.  He also invented the Franklin stove.  The stove could heat a room better than a fireplace and saved people a lot of fuel.  He also invented a special kind of glasses called bifocals.  This new kind of glasses helped people to read better.

• Benjamin Franklin thought reading was important.
• Benjamin Franklin was not afraid of fire.
• Benjamin Franklin was a great inventor.
• A Franklin stove can heat a whole room.

Can you imagine not having a television? Before the 1920’s there were no televisions. The first television set was invented by a 21 year old man named Philo Farnsworth. Farnsworth demonstrated the first moving picture in San Francisco in 1927. Even though it was only a simple, straight line, this was the beginning of electronic television as we know it. 

•  The invention of television
• Hobbies before 1920
• Who lives in San Francisco