A graph is a picture or chart showing the differences between things that we can measure. It helps us to understand information when we can see the facts in a picture. We use different kinds of graphs to show different kinds of information.

Beautiful coral reefs are found in warm, shallow seas. They stop beaches and shorelines from being washed away by waves and storms. They are home to thousands of different types of sea animals. The reefs are made of the skeletons of millions of little sea creatures called polyps. They take thousands of years to build up into coral reefs.

Are you good at sorting things into sets? Some children went for a walk in the park and on the beach. They found lots of different things. They sorted them into some interesting sets.

A volcano is a mountain that erupts — it explodes! Hot, melted rock called lava blows out of the top. It runs down the side of the mountain. The volcano shoots out steam and smoke and ash. It is dangerous for people and animals. Hot lava can cover farms and towns and houses.

Teeth are very important to help us eat our food. Babies with no teeth can only have milk or soft food. Animals need special teeth to help them catch their food. There are lots of different kinds of teeth to help them.

Children around the world eat all kinds of food. In some countries their food is different from ours. It looks different and it tastes quite different, too. Did you know that some of the foods you eat came from another country? How do people make their kind of food?

Sharks are very big and strong. They are fast and hungry, too. Sometimes little animals are stronger than big animals. Do you know how a little animal could help a big animal?

Things that we don't want any longer can be called rubbish, trash, junk or garbage. What do we do with it? What happens to it at your house? Do you recycle it? Recycling means reusing something that would otherwise be thrown away. What things could we recycle from our rubbish?

Marbles is a game that has been played for hundreds of years. Children like to have their own collection of marbles. There are many different ways to play with them. Have you ever played with marbles?

Have you used a map to find out about places? A map is a drawing of a place. It helps us find out how far it is from one place to another. A map can show rivers, mountains, and roads. Sometimes it shows a whole country or the whole world. You could make a map of your school or your town to show where everything is.