This picture was taken at Rhea’s first birthday party. There is one candle on the cake. It is now 6 years later and Rhea is 6 years older. How many candles will be on her birthday cake today?

You are a human. There are a lot of things you will know about yourself - your name, where you live, your height, your family and friends. Like all animals, you were once a baby. But now you have developed and grown into a child. Also like animals, human children keep growing but, unlike animals, they go to school. Then they go to a bigger school. Maybe they go to college or university.