Learn how linear, rotary, oscillating, and reciprocating motion differ, with examples and exam guidance for IB Design Technology HL mechanical systems.

A3.3 Introduction to mechanical systems (HL only)

What Does “Mechanical Advantage” Mean?

Understand mechanical advantage in IB Design Technology, including force ratios, worked calculations, system trade-offs, efficiency, and exam technique.

A3.3 Introduction to mechanical systems (HL only)

What's the Difference Between Gear-Driven, Belt-Driven, Cam, Lever, and Linkage Systems?

Learn how gear-driven, belt-driven, cam, lever, and linkage systems differ in motion, force, components, and uses for IB Design Technology HL exams.

A3.3 Introduction to mechanical systems (HL only)

What Are the Different Types of Gears (Spur, Bevel, Rack and Pinion, Worm)?

Learn how spur, bevel, rack-and-pinion, and worm gears transmit motion, change direction, and provide mechanical advantage in IB Design Technology HL.

A3.3 Introduction to mechanical systems (HL only)

How Does a Pulley (Belt-Driven) System Work?

Learn how belt-driven pulleys transfer rotary motion, change speed and torque, reverse direction, and are analysed in IB Design Technology HL exams.

A3.3 Introduction to mechanical systems (HL only)

What Are the Different Cam Shapes (Pear; Circular; Eccentric; Snail) and What Motion Do They Create?

Learn how pear, circular, eccentric and snail cams control follower motion, including rise, fall and dwell, for IB Design Technology HL A3.3 exams.

A3.3 Introduction to mechanical systems (HL only)

What's the Difference Between 1st-, 2nd-, and 3rd-Class Levers?

Learn how fulcrum, load and effort positions distinguish first-, second- and third-class levers, with IB Design Technology examples and exam tips.

A3.3 Introduction to mechanical systems (HL only)

What's the Difference Between Parallel, Reverse, and Bell Crank Linkages?

Learn how parallel, reverse, and bell crank linkages transmit motion, change direction, and differ in IB Design Technology HL exam questions and examples.

A3.4 Introduction to electronic systems (HL only)

What's the Difference Between an Analogue and a Digital Electronic System?

Learn how analogue and digital electronic systems differ in signal type, processing, noise response and applications for IB Design Technology HL.

A3.4 Introduction to electronic systems (HL only)

What SI Units Are Used for Voltage, Current, Resistance, and Power?

Learn the SI units and symbols for voltage, current, resistance and power, with equations, a worked example, and IB Design Technology HL exam guidance.

A3.4 Introduction to electronic systems (HL only)

What's the Difference Between Passive Components (Resistors; Capacitors) and Active Components (Diodes; Transistors)?

Learn how passive resistors and capacitors differ from active diodes and transistors in IB Design Technology electronic systems for exams.

A3.4 Introduction to electronic systems (HL only)

What Input Devices Does an Electronic System Use (Sensors; Switches)?

Learn how sensors and switches provide input signals in electronic systems, with IB Design Technology examples, signal types, and exam guidance.

A3.4 Introduction to electronic systems (HL only)

What's the Difference Between an Analogue and Digital Processing Component?

Learn how analogue and digital processing components differ in signal type, operation, examples, and interfaces for IB Design Technology HL exam questions.

A3.4 Introduction to electronic systems (HL only)

What Is a Microcontroller / Programmable Integrated Circuit (PIC)?

Learn what a microcontroller or programmable integrated circuit is, how it controls outputs from inputs, and what IB Design Technology HL exams require.

A3.4 Introduction to electronic systems (HL only)

What Output Devices Does an Electronic System Use (LEDs; Motors; Buzzers; LCDs)?

Learn how LEDs, motors, buzzers and LCDs act as output devices in IB Design Technology electronic systems, producing useful responses for users.

A3.4 Introduction to electronic systems (HL only)

What's the Difference Between an Open-Loop and Closed-Loop Electronic System?

Learn how open-loop and closed-loop electronic systems differ in feedback, control, accuracy, and applications for IB Design Technology HL A3.4 exams.

A3.4 Introduction to electronic systems (HL only)

What Does an Operational Amplifier (Op-Amp) Do?

Learn how an operational amplifier compares input voltages, amplifies their difference, and functions in circuits for IB Design Technology exams.

A3.4 Introduction to electronic systems (HL only)

What Is an Embedded System?

Learn what an embedded system is, how sensors, processors, outputs and feedback interact, and how to analyse examples in IB Design Technology HL exams.

A3.4 Introduction to electronic systems (HL only)

How Do You Read Symbols in an Electronic Circuit Diagram?

Learn how to read electronic circuit symbols, trace connections, identify input-process-output functions, and avoid common IB Design Technology exam errors.

A4.1 Manufacturing techniques (HL only)

What Are the Five Categories of Manufacturing Techniques (Additive; Subtractive; Forming; Joining; Finishing)?

Learn the five HL manufacturing categories: additive, subtractive, forming, joining and finishing, with definitions, examples and clear IB exam guidance.

A4.1 Manufacturing techniques (HL only)

What Is Additive Manufacturing / 3D Printing?

Learn how additive manufacturing builds products layer by layer, including its main stages, benefits, limitations, and application in IB Design Technology HL.

A4.1 Manufacturing techniques (HL only)

What's the Difference Between LOM, FDM, and SLA 3D Printing?

Compare LOM, FDM, and SLA 3D printing by process, materials, accuracy, advantages, and limitations for IB Design Technology HL exam responses.

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