DoAssignment study guide

Ontario Grade 12 Computer Science (ICS4U) curriculum and lessons

Follow the official 2008 ICS4U expectation codes, then open a published lesson for a worked example. Begin with ICS3U knowledge of variables, arrays, control flow and functions; ICS3U is the official prerequisite.

Course overview

Grade 12 Ontario Computer Science (ICS4U) course overview

This independent guide covers Grade 12 Computer Science (ICS4U). Its 4 course sections lead to the complete topic map below; open a written lesson where one has been published. Read the official Ontario curriculum for exact requirements.

این راهنمای مستقل دربارهٔ علوم رایانه پایه دوازدهم انتاریو (ICS4U) است. از بخش‌های زیر برای پیدا کردن موضوع مورد نظر و درس‌های منتشرشده استفاده کنید. برنامهٔ درسی رسمی انتاریو

Course pathway: University Preparation

مسیر تحصیلی: آمادگی دانشگاه

  1. A · Programming Concepts and Skills (مفاهیم و مهارت‌های برنامه‌نویسی)
  2. B · Software Development (توسعه نرم‌افزار)
  3. C · Designing Modular Programs (طراحی برنامه‌های پیمانه‌ای)
  4. D · Topics in Computer Science (موضوع‌های علوم رایانه)

Course questions

Studying ICS4U: topics, lessons, and official requirements

What topics are in Ontario Grade 12 Computer Science (ICS4U)?

The course map includes Programming Concepts and Skills, Software Development, Designing Modular Programs, and 1 other section. Follow the complete section list above for the full study path.

درس علوم رایانه پایه دوازدهم انتاریو (ICS4U) چه مباحثی دارد؟ از جمله مباحث این درس مفاهیم و مهارت‌های برنامه‌نویسی، توسعه نرم‌افزار، طراحی برنامه‌های پیمانه‌ای است. فهرست کامل بخش‌ها در بالای صفحه قرار دارد.

Where can I study Grade 12 Computer Science in Ontario?

23 of 47 written lessons are currently published and free to read. Open a linked lesson in the section map above. Check the official Ontario curriculum for exact requirements.

درس‌ها و برنامهٔ درسی علوم رایانه پایه دوازدهم انتاریو را از کجا پیدا کنم؟ اکنون 23 درس از 47 درس نوشتاری منتشر شده و خواندن آن‌ها رایگان است. درس‌های دارای پیوند را در نقشهٔ بخش‌های بالا باز کنید. برای شرایط دقیق به برنامهٔ درسی رسمی انتاریو مراجعه کنید.

Publication status

23 of 47 written lessons published

The topic map covers the course expectations. A topic marked “written lesson not published” remains available for practice and tutoring, but does not have a reviewed written lecture yet.

ICS4U study path

From algorithms to a documented software project

Programming and algorithms

Trace searches, sorts, recursion and two-dimensional arrays; check preconditions and expected outputs.

Modular design

Plan reusable classes and modules, then compare algorithm work with explicit example counts.

Software development

Define scope, milestones, tests, version control and a clear handoff.

Computing in society

Evaluate ethics, environmental stewardship, emerging technology and career paths using evidence.

Review the ICS3U prerequisite · Read the official Ontario Computer Studies curriculum

در ICS4U جست‌وجو، مرتب‌سازی، بازگشت، طراحی پیمانه‌ای و مدیریت پروژه را می‌آموزید. پیش‌نیاز رسمی آن ICS3U است.

Start with a reviewed lesson

Linear and binary search

Open the published ICS4U lesson for Write linear and binary search. Then return to the course map to choose your next topic.

Read the free Linear and binary search lesson

درس جست‌وجوی خطی و دودویی را بخوانید و سپس موضوع بعدی را از فهرست درس انتخاب کنید.

Free published lessons

Start learning ICS4U

These lessons are public, free to read, and connected to the full course map below.

A1.1 · Use integer division and remainders

This lesson focuses only on integer division and remainders. You have likely already divided whole numbers and worked with Python…

B1.1 · Define scope, tasks, deliverables and schedule

Before a team begins building software, it needs a shared picture of what it intends to complete and how it will organize the work.…

A1.2 · Convert data types explicitly and safely

A program treats text, whole numbers, decimal numbers and true-or-false values differently. For example, adding two numbers finds a…

B1.2 · Develop a product against its project plan

In ICS3U, you have experience creating programs and dividing a larger task into manageable steps. This lesson focuses on coordinating…

A1.3 · Compare non-numeric data

In ICS3U, you may have compared numbers with operators such as less than and equal to. A program can also compare non-numeric data…

B1.3 · Code, test, deploy and document a product

In ICS3U, you practised writing and tracing programs. In this lesson, you connect those skills to the work of making a product ready…

A1.4 · Explain finite precision and representation limits

Computers store information using patterns of bits, each of which has one of two values: 0 or 1. Because a computer value uses a…

B1.4 · Track a project with a schedule or Gantt chart

A project plan is useful only if the team checks it as work proceeds. In ICS3U, you may have divided a programming project into…

ICS4U

Topics by strand

A · Programming Concepts and Skills

Use data types, modules, algorithms, tests and documentation.

B · Software Development

Plan, deliver and review a team software project.

C · Designing Modular Programs

Decompose software and analyse algorithm efficiency.

  • C1.1 · Model modules, classes and abstract data types (written lesson not published)
  • C1.2 · Use encapsulation in program design (written lesson not published)
  • C1.3 · Decompose a task into subprograms (written lesson not published)
  • C1.4 · Design reusable modules and methods (written lesson not published)
  • C2.1 · State algorithm preconditions and postconditions (written lesson not published)
  • C2.2 · Compare linear and binary search costs (written lesson not published)
  • C2.3 · Compare sorting algorithm costs (written lesson not published)
  • C2.4 · Recognize non-termination and repeated recursive work (written lesson not published)
D · Topics in Computer Science

Assess sustainability, ethics, emerging technologies and careers.

  • D1.1 · Assess ways to reduce computing impacts (written lesson not published)
  • D1.2 · Investigate sustainability initiatives (written lesson not published)
  • D2.1 · Analyse an ethical computing issue (written lesson not published)
  • D2.2 · Explain why programmers need a code of ethics (written lesson not published)
  • D2.3 · Promote ethical computing practices (written lesson not published)
  • D3.1 · Explain impacts of emerging technology (written lesson not published)
  • D3.2 · Research an emerging technology (written lesson not published)
  • D4.1 · Report on interdisciplinary computer-science research (written lesson not published)
  • D4.2 · Investigate a theoretical computer-science topic (written lesson not published)
  • D4.3 · Research computer-science careers and education (written lesson not published)
  • D4.4 · Evaluate computing skills and work habits (written lesson not published)

Worked examples

Start with worked Grade 12 examples

These original examples introduce selected ICS4U expectations. The full expectation map is not a complete set of published written lessons or a substitute for official course materials and assignments. The strand-prefixed labels below identify the matching Ontario specific expectations; titles are concise study-guide paraphrases.

1. Compare two searches

Find 23 in the sorted list [3, 8, 12, 17, 23, 31, 42, 56]. How do linear and binary search differ?

Worked method: Linear search checks 3, 8, 12, 17 and 23: five comparisons. Binary search checks middle values 17, 31 and 23: three comparisons. Binary search requires sorted input.

فارسی · توضیح مثال

عدد ۲۳ را در فهرست مرتب [3, 8, 12, 17, 23, 31, 42, 56] پیدا کنید. جست‌وجوی خطی و دودویی چه تفاوتی دارند؟ جست‌وجوی خطی ۳، ۸، ۱۲، ۱۷ و ۲۳ را بررسی می‌کند: پنج مقایسه. جست‌وجوی دودویی مقدارهای میانی ۱۷، ۳۱ و ۲۳ را بررسی می‌کند: سه مقایسه. جست‌وجوی دودویی به ورودی مرتب نیاز دارد.

2. Trace a base case

Trace factorial(3) when factorial(0) = 1 and factorial(n) = n × factorial(n − 1).

Worked method: The calls are factorial(3), factorial(2), factorial(1), factorial(0); the base case returns 1, then the calls return 1, 2 and 6.

فارسی · توضیح مثال

تابع factorial(3) را با factorial(0) = 1 و factorial(n) = n × factorial(n − 1) ردیابی کنید. فراخوانی‌ها factorial(3)، factorial(2)، factorial(1)، factorial(0) هستند؛ حالت پایه ۱ برمی‌گرداند و سپس نتیجه‌ها ۱، ۲ و ۶ هستند.

Try independently, then check

Write your own solution before opening each answer. If a step is unclear, review the matching expectation or a Grade 11 prerequisite.

Practice 1

What condition must hold before binary search?

Show worked answer

The input sequence must be sorted according to the same comparison rule used by the search.

فارسی · تمرین و پاسخ

پیش از جست‌وجوی دودویی چه شرطی باید برقرار باشد؟ دنباله ورودی باید بر پایه همان قانون مقایسه‌ای که جست‌وجو به کار می‌برد مرتب باشد.

Practice 2

What stops factorial recursion?

Show worked answer

A reachable base case, here n = 0, returns without making another recursive call.

فارسی · تمرین و پاسخ

چه چیزی بازگشت فاکتوریل را متوقف می‌کند؟ یک حالت پایه دست‌یافتنی، اینجا n = 0، بدون فراخوانی بازگشتی دیگر مقدار برمی‌گرداند.

Scientific investigation processes across expectations

These processes are practised throughout the course, rather than listed as separate lessons.

  • State assumptions and input constraints before comparing algorithms (پیش از مقایسه الگوریتم‌ها، فرض‌ها و محدودیت‌های ورودی را بیان کنید)
  • Keep code, diagrams, traces and claimed outputs consistent (کد، شکل، ردیابی و خروجی ادعاشده را سازگار نگه دارید)

Source and coverage

Prerequisite: ICS3U · Grade 11 Introduction to Computer Science. Confirm your current school timetable and admission requirements.

The expectation map follows the official Ontario computer science curriculum. Titles are concise study-guide paraphrases; consult the official source for exact requirements. Browse all courses.

Sources and editorial process

Curriculum-aligned and reviewed before publication

This independent study guide follows the official course source. It is not an official government, school, or university publication.

Lessons may be AI-assisted or editorially prepared. Published content is checked for structure, notation, calculations, course boundaries, and readability before release. Because corrections can still be necessary, readers can report a problem.

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Related courses and next steps

Review a prerequisite or explore a related course. Follow your school or university requirements when choosing your next course.

پیش‌نیازها و درس‌های مرتبط را مرور کنید و برای انتخاب درس بعدی، مقررات مدرسه یا دانشگاه را بررسی کنید.

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