Mark the topic in this sentence:

Bread is an important part of our diet.

Mark the controlling idea in this sentence:

Potatoes are easy to grow.

Identify the controlling idea:

Potatoes are the basic food of the Irish.

Identify the controlling idea:

French fries are popular all over the world.

Identify the topic:

Rice is an important part of people’s diets in Asia.

Identify the controlling idea:

The Middle East is the birthplace of three main religions.

Identify the topic:

Tokyo has excellent public transportation systems.

Identify the controlling idea:

Big cars are safer than small cars for two reasons.

Identify the topic:

A baseball player must master several skills.