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ACARA Digital Technologies Years 7–8 — Binary Number Representation

Why computers count in ones and zeros, and how to read them.

Modules (30)

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:

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Years 5–6 Data & Information Crossword: Data, information and binary representation (Modules 1–10) 10 clues · Data and information, Types of data: numbers and text, Types of data: images, sound and video, Same data, different representations and more
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Years 5–6 Data & Information Word Search: Data, information and binary representation and Acquiring and manipulating data (Modules 1–20) 20 words to find · Data and information, Types of data: numbers and text, Types of data: images, sound and video, Same data, different representations and more
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Years 7–8 Data & Information Crossword: Representing data with binary and Acquiring, storing and validating data (Modules 9–45) 10 clues · 8-bit binary numbers and the range 0 to 255, Converting a larger decimal number to binary, How many values n bits can store, Looking up characters in the ASCII table and more
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Years 7–8 Data & Information Word Search: Representing data with binary to Using digital tools and conventions (Modules 9–80) 22 words to find · 8-bit binary numbers and the range 0 to 255, Converting a larger decimal number to binary, How many values n bits can store, Looking up characters in the ASCII table and more
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IGCSE Computer Science Paper 1 Crossword: 1.1 Number Systems (Modules 3–17) 10 clues · Number bases: denary, binary and hexadecimal, Denary place values, 16-bit binary place values, Converting 16-bit binary to denary and more
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IGCSE Computer Science Paper 1 Crossword: 1.2 Text, Sound and Images and 1.3 Data Storage and Compression (Modules 43–58) 10 clues · Comparing ASCII and Unicode, Analogue sound waves and digital sound, Sample resolution, Effect of sample rate and resolution on accuracy and file size and more
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IGCSE Computer Science Paper 1 Word Search: 1.1 Number Systems (Modules 3–27) 22 words to find · Number bases: denary, binary and hexadecimal, Denary place values, 16-bit binary place values, Converting 16-bit binary to denary and more
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IGCSE Computer Science Paper 1 Word Search: 1.1 Number Systems to 1.3 Data Storage and Compression (Modules 28–58) 20 words to find · Why two's complement is used, The sign bit worth -128, Range of 8-bit two's complement, Converting 8-bit two's complement to denary and more
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IGCSE Computer Science Paper 2 Crossword: 9 Databases and 10 Boolean Logic (Modules 539–551) 10 clues · Common mistakes in SQL scripts, What a logic gate is, Labelling inputs and the output: A, B, C and X, Truth table layout for two inputs and more
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IGCSE Computer Science Paper 2 Word Search: 9 Databases and 10 Boolean Logic (Modules 539–580) 20 words to find · Common mistakes in SQL scripts, What a logic gate is, Labelling inputs and the output: A, B, C and X, Truth table layout for two inputs and more
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ACARA Digital Technologies Years 5–6 Crossword: Networks and Sharing Data and Representing Data with Numbers (Modules 44–57) 10 clues · Describing a network in short sentences, Binary means two states, On and off switches in everyday things, Encode and decode and more
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ACARA Digital Technologies Years 5–6 Crossword: Representing Data with Numbers (Modules 73–84) 10 clues · Colouring cells by their number with a conditional formatting rule, Adding more rules for more colours, A black-and-white picture from 0s and 1s in a spreadsheet, Making pixel art with whole numbers in a spreadsheet and more
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ACARA Digital Technologies Years 5–6 Word Search: Networks and Sharing Data and Representing Data with Numbers (Modules 44–71) 20 words to find · Describing a network in short sentences, Binary means two states, On and off switches in everyday things, Encode and decode and more
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ACARA Digital Technologies Years 5–6 Word Search: Representing Data with Numbers and Algorithms with Branching and Repetition (Modules 73–104) 21 words to find · Colouring cells by their number with a conditional formatting rule, Adding more rules for more colours, A black-and-white picture from 0s and 1s in a spreadsheet, Making pixel art with whole numbers in a spreadsheet and more
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Crossword: Wired and Wireless Networks and Representing Text, Images and Sound (Modules 69–124) 10 clues · Wired vs wireless: mobility and convenience, Choosing a network type for a scenario, TCP/IP: the internet's core protocols, Redundant routes keep a network working and more
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Crossword: Representing Text, Images and Sound (Modules 128–152) 8 clues · Converting numbers from 0 to 127 using seven place values, Padding binary with leading zeros, ASCII codes for digits, spaces and punctuation, Converting a word to ASCII decimal codes and more
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Crossword: Representing Text, Images and Sound and Binary Number Representation (Modules 173–188) 10 clues · Zooming in to see samples in an audio editor, Text, images and sound all become integers, then binary, Explaining data representation to a peer, The two-state (on/off) system and more
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Crossword: Binary Number Representation (Modules 189–203) 10 clues · Most and least significant bit, Reading 101 in binary: digits, not a hundred and one, Converting numbers 0 to 31 with five bits, Leading zeros and fixed-width binary and more
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Crossword: Binary Number Representation and Acquiring and Storing Data (Modules 204–236) 10 clues · How storage keeps bits, Explaining why digital technology uses binary, Closed and open survey questions, Choosing who to survey: sample and sample size and more
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Word Search: Wired and Wireless Networks and Representing Text, Images and Sound (Modules 69–152) 21 words to find · Wired vs wireless: mobility and convenience, Choosing a network type for a scenario, TCP/IP: the internet's core protocols, Redundant routes keep a network working and more
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Word Search: Representing Text, Images and Sound and Binary Number Representation (Modules 153–188) 20 words to find · Inspecting a pixel's RGB numbers, 24-bit colour: three bytes per pixel, Writing an RGB colour in binary, Vector images and more
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Word Search: Binary Number Representation and Acquiring and Storing Data (Modules 189–236) 21 words to find · Most and least significant bit, Reading 101 in binary: digits, not a hundred and one, Converting numbers 0 to 31 with five bits, Leading zeros and fixed-width binary 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 7–8 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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