ACARA Digital Technologies Years 9–10 — Modular and Object-Oriented Programming (JavaScript)
Writing JavaScript programs in reusable pieces, including with classes and objects.
Modules (68)
1
console.log()
2
Variables: let, const, var
3
Template Literals
4
Comparison Operators
5
Boolean Logic
6
If Statements
7
For Loops
8
Decomposing a problem into sub-problems
9
Why decomposition helps: testing each part separately
10
Functions – Declaring
11
Camel casing
12
Functions – Parameters
13
Functions – Return Values
14
A function with no return gives undefined
15
Functions – Default Parameters
16
Functions – Scope
17
Functions calling other functions
18
Functions that return true or false (JavaScript)
19
Documenting a function with a comment
20
Arrow Functions
21
Passing a function as an argument (callback)
22
Arrays – Creation and Indexing
23
The array length property
24
Reading beyond the end of an array
25
Looping through an array by index
26
for...of Loops
27
Arrays – Mutating Methods
28
Removing items with pop, shift and splice
29
Searching an array with includes and indexOf
30
Passing an array to a function
31
A function that totals and averages an array
32
A function that finds the largest value in an array
33
Arrays – forEach()
34
Arrays – map()
35
Arrays – filter()
36
Arrays – reduce()
37
Reading a JavaScript error message
38
Debugging with console.log
39
Trace Tables
40
Breakpoints and stepping in browser DevTools
41
Common bugs in functions and arrays
42
Error Handling – try/catch
43
throw Statement
44
Boundary test values
45
Testing a function with console.assert
46
Modifying an existing JavaScript program
47
Why programmers use object-oriented programming
48
Class, object, property and method
49
Objects – Creation and Access
50
Changing and adding object properties
51
Nested Arrays and Objects
52
A method inside an object literal
53
OOP – Classes & Objects
54
OOP – constructor Method
55
Creating an object with new
56
The this keyword in a class
57
Reading and changing an object's properties
58
OOP – Methods
59
Methods with parameters and return values (JavaScript)
60
Methods that change an object's properties
61
One class, many objects
62
Storing objects in an array
63
Methods calling other methods
64
Designing classes with a class diagram
65
Choosing properties and methods for a class from a scenario
66
Modifying an existing class
67
Common bugs in classes and objects
68
Building a modular program with functions, arrays and classes
Smaller journeys, one per content description
The same modules, split up so a class can take just the content description it's working on.
9
ACARA 9-10 Digital Technologies: JavaScript basics and decomposing problems — AC9TDI10P09
Students write basic JavaScript using output, variables, conditions and loops, and learn to break a problem into sub-problems that can be tested separately.
12
ACARA 9-10 Digital Technologies: Writing modular functions in JavaScript — AC9TDI10P09
Students write reusable JavaScript functions with parameters, return values, scope and callbacks, and combine small functions to build larger programs.
15
ACARA 9-10 Digital Technologies: Arrays as data structures in JavaScript — AC9TDI10P09
Students store, search, change and process lists of data with JavaScript arrays, loops, array methods and functions that take arrays.
10
ACARA 9-10 Digital Technologies: Debugging, testing and modifying JavaScript programs — AC9TDI10P09
Students find and fix errors, test programs with chosen test cases, and safely modify existing JavaScript code.
12
ACARA 9-10 Digital Technologies: Object-oriented programming concepts: objects and classes — AC9TDI10P09
Students learn why object-oriented programming is used and how objects, classes, constructors, properties and methods work in JavaScript.
10
ACARA 9-10 Digital Technologies: Designing and building with classes — AC9TDI10P09
Students write class methods, work with many objects, design classes from a scenario, and build and debug a modular program from functions, arrays and classes.
Printables for this journey
Every module above has its own free printable worksheet with an answer key. These crosswords and word searches cover the same terms:
✎
JavaScript Crossword: Getting Started (Modules 1–10)
6 clues · console.log(), Comments, Variables: let, const, var, Basic Data Types and more
✎
JavaScript Crossword: Control Flow and Arrays & Strings (Modules 11–25)
7 clues · Comparison Operators, Boolean Logic, Truthy and Falsy Values, If Statements and more
✎
JavaScript Crossword: Arrays & Strings (Modules 21–30)
8 clues · break and continue, Arrays – Creation and Indexing, for...of Loops, Arrays – Mutating Methods and more
✎
JavaScript Crossword: Objects & Functions (Modules 31–40)
8 clues · String Search Methods, Objects – Creation and Access, Objects – Methods (keys, values, entries), Objects – for...in Loop and more
✎
JavaScript Crossword: Advanced JavaScript (Modules 41–52)
10 clues · Functions – Default Parameters, Arrow Functions, Functions – Scope, Error Handling – try/catch and more
🔎
JavaScript Word Search: Getting Started to Arrays & Strings (Modules 1–29)
20 words to find · console.log(), Comments, Variables: let, const, var, Basic Data Types and more
🔎
JavaScript Word Search: Arrays & Strings to Advanced JavaScript (Modules 21–52)
20 words to find · break and continue, Arrays – Creation and Indexing, for...of Loops, Arrays – Mutating Methods and more
✎
VCE Pseudocode Crossword: if-then-else block to Reading and tracing complex pseudocode (Modules 11–28)
10 clues · if-then-else block, else if: chained selection, for loop: for i from 1 to n, Nested for loops and more
🔎
VCE Pseudocode Word Search: What is Pseudocode to Reading and tracing complex pseudocode (Modules 1–28)
20 words to find · What is Pseudocode, Pseudocode Writing Conventions, Variable Assignment: x <- value, input keyword and more
✎
VCE Software Development U3O1 Crossword: Requirements and design tools to Naming conventions and internal documentation (Modules 10–47)
10 clues · Data dictionary, Writing a data dictionary entry, Designing classes with a class diagram, Object descriptions and more
✎
VCE Software Development U3O1 Crossword: Errors and debugging and Testing modules (Modules 168–177)
10 clues · Debugging a program with print() and trace tables, Setting a breakpoint, Stepping through code and watching variables, Tracing nested loops and more
🔎
VCE Software Development U3O1 Word Search: Requirements and design tools to Pseudocode (Modules 10–71)
21 words to find · Data dictionary, Writing a data dictionary entry, Designing classes with a class diagram, Object descriptions and more
🔎
VCE Software Development U3O1 Word Search: Errors and debugging to Artificial intelligence in programming (Modules 168–193)
20 words to find · Debugging a program with print() and trace tables, Setting a breakpoint, Stepping through code and watching variables, Tracing nested loops and more
✎
Years 7–8 Creating Digital Solutions Crossword: Defining and decomposing problems and Designing and tracing algorithms (Modules 3–47)
10 clues · Interviewing a user, Decomposing a problem into sub-problems, Decomposition diagrams, Non-functional requirements and more
🔎
Years 7–8 Creating Digital Solutions Word Search: Defining and decomposing problems to Evaluating digital solutions (Modules 3–125)
21 words to find · Interviewing a user, Decomposing a problem into sub-problems, Decomposition diagrams, Non-functional requirements and more
✎
VCE Applied Computing U1O2 Crossword: Requirements and design tools to Naming conventions and internal documentation (Modules 8–88)
10 clues · Writing an IPO chart for a program, Accessing record fields by index, Abstraction in OOP, Encapsulation in OOP and more
🔎
VCE Applied Computing U1O2 Word Search: Requirements and design tools to Legal requirements and emerging trends (Modules 8–124)
21 words to find · Writing an IPO chart for a program, Accessing record fields by index, Abstraction in OOP, Encapsulation in OOP and more
✎
IGCSE Computer Science Paper 2 Crossword: 7b Decomposition and Sub-systems (Modules 94–106)
10 clues · Sub-system, Sub-systems made of further sub-systems, Component parts of a problem: inputs, Component parts of a problem: processes and more
🔎
IGCSE Computer Science Paper 2 Word Search: 7b Decomposition and Sub-systems (Modules 94–118)
21 words to find · Sub-system, Sub-systems made of further sub-systems, Component parts of a problem: inputs, Component parts of a problem: processes and more
✎
Crossword: Modular and Object-Oriented Programming (Python) and Modular and Object-Oriented Programming (JavaScript) (Modules 681–707)
10 clues · Testing a class with assert, Building a modular program with functions, lists and classes, A function with no return gives undefined, Functions calling other functions and more
✎
Crossword: Modular and Object-Oriented Programming (JavaScript) (Modules 710–727)
10 clues · Removing items with pop, shift and splice, Searching an array with includes and indexOf, Passing an array to a function, A function that totals and averages an array and more
✎
Crossword: Modular and Object-Oriented Programming (JavaScript) (Modules 728–742)
10 clues · Modifying an existing JavaScript program, Why programmers use object-oriented programming, Class, object, property and method, Changing and adding object properties and more
✎
Crossword: Modular and Object-Oriented Programming (JavaScript) and Cyber Security Threats and Vulnerabilities (Modules 743–781)
10 clues · One class, many objects, Storing objects in an array, Methods calling other methods, Choosing properties and methods for a class from a scenario and more
🔎
Word Search: Modular and Object-Oriented Programming (Python) and Modular and Object-Oriented Programming (JavaScript) (Modules 629–707)
21 words to find · Functions that return True or False (Python), Passing a list into a function, Functions that change a list or return a new one, Building and returning a list from a function and more
🔎
Word Search: Modular and Object-Oriented Programming (JavaScript) (Modules 710–742)
21 words to find · Removing items with pop, shift and splice, Searching an array with includes and indexOf, Passing an array to a function, A function that totals and averages an array and more
🔎
Word Search: Modular and Object-Oriented Programming (JavaScript) and Cyber Security Threats and Vulnerabilities (Modules 743–809)
21 words to find · One class, many objects, Storing objects in an array, Methods calling other methods, Choosing properties and methods for a class from a scenario and more
Frequently Asked Questions
Are these worksheets free?
Yes — every worksheet and its answer key is free to view, download, and print, with no account required to access any individual module.
Do I need an account?
No account is needed to view or print a worksheet. A free teacher account adds extras like assigning modules to a class and tracking progress automatically — it takes under three minutes to set up and doesn't need a credit card.
What year level is this for?
This curriculum is aligned to the Australian Curriculum (ACARA) and Victorian Curriculum, spanning roughly Years 3 to 10 — from first sequencing and variables through to object-oriented programming and advanced data structures. Start wherever matches your class's current level; each module builds on the last.
Can I print them?
Yes — every module has a one-click Print Worksheet button that generates a printable page with the practice questions and a full answer key.
Is this aligned to a curriculum?
Yes — the module sequence is mapped to the Australian Curriculum (ACARA) and Victorian Curriculum, and a class's progress is reported back against those curriculum bands (e.g. ACARA Years 5–6 sequencing and iteration, Years 7–8 functions and data structures), not just a generic difficulty scale.
Can students use this without a teacher?
Yes — students can start any module and practice directly, no class or account required. Joining a teacher's class with a class code adds progress tracking, class badges, and live Sprints, but isn't needed to work through the worksheets or modules solo.
Do I need to know ACARA Digital Technologies Years 9–10 myself to teach this?
No — every module comes with a full worked answer key, and Cloodit tracks who's stuck automatically, so you don't need to solve each exercise yourself before assigning it or be able to debug a student's work line by line.
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