Technologies · Year 4
40 interactive lessons to explore
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📚 Term 1 · Lessons 1–10
›Lesson 1
Algorithms & Sequences
Learn how computers follow step-by-step instructions in the right order.
⏱ 18 min · 11 questions
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Lesson 2
Finding and Fixing Bugs (Debugging)
Learn how to spot mistakes in an algorithm and fix them step by step.
⏱ 18 min · 7 questions
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Lesson 3
Visual Programming with Blocks
Learn how block-based programs work and snap blocks together to make code.
⏱ 18 min · 7 questions
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Lesson 4
Testing and Improving a Design
Learn how designers test their products and make them better.
⏱ 16 min · 7 questions
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Lesson 5
Conditions: True or False Tests
Learn how computers check if something is true or false to make decisions.
⏱ 18 min · 7 questions
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Lesson 6
Loops Inside Loops
Use a loop inside another loop to repeat patterns of steps.
⏱ 18 min · 7 questions
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Lesson 7
Fair Testing Your Designs
Learn how to test designs fairly so you can trust the results.
⏱ 16 min · 7 questions
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Lesson 8
Designing a Healthy Meal
Use food groups to design a balanced, healthy meal.
⏱ 18 min · 7 questions
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Lesson 9
Protecting Personal Information
Learn what personal information is and how to keep it safe online.
⏱ 18 min · 7 questions
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Lesson 10
Reading Data in Graphs
Read column graphs to answer questions about data.
⏱ 18 min · 6 questions
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📚 Term 2 · Lessons 11–20
›Lesson 11
Joining and Fastening Techniques
Compare permanent and temporary ways of fastening materials in a design.
⏱ 16 min · 7 questions
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Lesson 12
Reduce, Reuse, Recycle in Designs
Apply the three Rs to design products that are kinder to the environment.
⏱ 16 min · 7 questions
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Lesson 13
How Computers Store Data
Learn about the devices that store data and how much they can hold.
⏱ 16 min · 7 questions
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Lesson 14
How Web Browsers Work
Understand how a browser fetches and displays web pages from the internet.
⏱ 16 min · 7 questions
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Lesson 15
Sensors and Inputs
Discover how digital systems sense the world using inputs like buttons and sensors.
⏱ 18 min · 6 questions
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Lesson 16
Strong Bridges and Triangles
Explore why triangles make bridges and structures strong.
⏱ 18 min · 6 questions
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Lesson 17
Searching and Sorting Data
Learn how sorting data makes it much faster to search and find.
⏱ 18 min · 6 questions
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Lesson 18
Choosing Fabrics for the Job
Explore textiles and how their properties suit different products.
⏱ 18 min · 6 questions
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Lesson 19
Codes and Secret Messages
Encode and decode messages using simple substitution codes.
⏱ 16 min · 6 questions
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Lesson 20
Reading a Design Brief
Use a design brief and success criteria to guide a project.
⏱ 16 min · 6 questions
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📚 Term 3 · Lessons 21–30
›Lesson 21
Events: When Something Happens
Use events like clicks and key presses to start actions in a program.
⏱ 16 min · 6 questions
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Lesson 22
What Makes Things Go
Explore how products get energy to work — batteries, wind, muscle and more.
⏱ 16 min · 6 questions
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Lesson 23
If-Then Rules in Programs
Programs make decisions using 'if this, then that' rules. Learn how conditions control actions.
⏱ 16 min · 6 questions
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Lesson 24
How Gears Change Speed
Big and small gears turn at different speeds. Discover how gears pass on movement.
⏱ 16 min · 6 questions
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Lesson 25
Respectful Messages Online
Words online can be misread. Learn to send clear, kind messages and respond well.
⏱ 16 min · 6 questions
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Lesson 26
Designing for Everyone
Good design works for all kinds of people. Learn how designers think about different needs.
⏱ 16 min · 6 questions
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Lesson 27
Sketching and Annotating Designs
Learn to draw a design and add labels and notes that explain how it works.
⏱ 15 min · 6 questions
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Lesson 28
Good Data In, Good Data Out
Learn why the data we type into a computer must be correct, or the answer will be wrong.
⏱ 15 min · 6 questions
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Lesson 29
Packaging That Protects
Explore how packaging is designed to protect products and reduce waste at the same time.
⏱ 15 min · 6 questions
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Lesson 30
Working Together Online Safely
Learn how people share and work on documents together online, and how to do it safely and kindly.
⏱ 15 min · 6 questions
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📚 Term 4 · Lessons 31–40
›Lesson 31
Simple Circuits in Products
Find out how a circuit lets electricity power things like torches and toys.
⏱ 16 min · 7 questions
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Lesson 32
Counted Loops in Programs
Use loops that repeat a set number of times to make programs shorter.
⏱ 16 min · 7 questions
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Lesson 33
Designing Clothing for Conditions
Match fabrics and features to design clothing for different weather.
⏱ 16 min · 7 questions
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Lesson 34
Reading and Comparing Data Tables
Read rows and columns in a table to compare data and answer questions.
⏱ 16 min · 6 questions
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Lesson 35
Tools for Collecting Data
Compare ways to collect data — tally marks, forms and digital tools — and pick the best one.
⏱ 16 min · 6 questions
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Lesson 36
Pulleys Help Us Lift
See how a pulley changes the direction of a pull and makes lifting easier.
⏱ 16 min · 6 questions
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Lesson 37
Breaking a Problem into Parts
Learn to split a big problem into smaller, easier parts — called decomposition.
⏱ 16 min · 6 questions
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Lesson 38
Waterproof and Water-Resistant Design
Investigate how materials and coatings stop water getting through products.
⏱ 16 min · 6 questions
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Lesson 39
Binary: On and Off Signals
Discover how computers use just two signals — on and off — to store information.
⏱ 15 min · 7 questions
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Lesson 40
Test and Improve Your Design
Learn how testing a design helps you find problems and make it better.
⏱ 15 min · 7 questions