The rule as a picture, 5 multiple-choice questions, 3 sentences to correct and a short writing task. Free to print and copy for your class or for self-study.
Want the explanation first? Read the A vs No Article lesson
Use a / an for one countable thing: a coffee (one cup), a chicken (the animal). Use no article for uncountable nouns, which are substances, materials and ideas: Coffee keeps me awake. I had chicken for lunch. Some nouns, like advice and information, never take a or an.
Can I have a coffee?
Coffee keeps me awake.
Write two sentences about your own life: one with A / An and one with No article. Then explain the difference to a partner.
Answers will vary. Check that each sentence follows the rule on page 1, or paste them into Clarigram to have them checked.