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Strings, random numbers and exceptions

AQA 75174.1 L4A-levelLesson packSubscription
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This worksheet marks itself

Set it as homework or classwork and every answer is marked as pupils go, with feedback on what they got wrong. The scores go straight into your mark book, so you can see who needs help before the next lesson.

  • 12 questions
  • 29 marks
  • about 35 minutes
  • marked instantly

Question types: multiple choice, short answer, matching, true or false.

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Try one from this worksheet

State the value of city.Substring(3, 4). string city = "Manchester";

Pick an answer: it's marked straight away, just as your pupils would see it.

About this resource

AQA A-level Computer Science (7517) 4.1.1.7 String-handling operations · 4.1.1.8 Random number generation · 4.1.1.9 Exception handling. C# lesson 4 of 10 in 4.1 Programming: a spot-the-mistakes Do Now, a short key idea, an 11-challenge ladder in three sets with exact test data, two exam questions…

17 slides.

Lesson outline

  1. Do Now: spot the 3 mistakes
  2. Do Now: answers
  3. Key idea: Strings
  4. Key idea: Random numbers
  5. Quick check: which line rolls a dice?
  6. Key idea: Exceptions
  7. Set 1: cut strings up
  8. Set 2: exceptions
  9. Exam question E1: string functions in pseudo-code
  10. Model answer E1
  11. Exam question E2: stop the crash
  12. Model answer E2
Unit bundle4.1 Programming · full C# lessons
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