Learn how to present a design solution to stakeholders using evidence, prototypes, specifications, justification, and feedback in IB Design Technology.

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B2.2 Modelling and prototyping

How Do You Construct and Interpret Isometric, Orthographic, and Exploded Drawings?

Learn how to construct and interpret isometric, orthographic, and exploded drawings for IB Design Technology B2.2 modelling and prototyping.

B2.2 Modelling and prototyping

What's the Difference Between an Aesthetic and a Functional Prototype?

Learn how aesthetic and functional prototypes differ in purpose, features, testing and evaluation for IB Design Technology B2.2 exam questions.

B2.2 Modelling and prototyping

What Levels of Fidelity Are Used in Physical Prototyping?

Learn how low- and high-fidelity physical prototypes differ in IB Design Technology, including their purposes, features, testing uses, and limitations.

B2.2 Modelling and prototyping

How Is CAD Used to Create Surface, Solid, and Virtual Models?

Learn how CAD creates surface, solid, and virtual models, including their construction, uses, limitations, and application in IB Design Technology.

B2.2 Modelling and prototyping

How Do You Interpret Finite Element Analysis Output?

Learn how to interpret FEA stress, strain, displacement, safety factor and mesh results for IB Design Technology modelling and prototyping exam questions.

B2.2 Modelling and prototyping

How Do You Prepare a CAD Model for Rapid Prototyping?

Learn how to prepare a CAD model for rapid prototyping by checking geometry, tolerances, orientation, file export, slicing, and machine settings.

B2.2 Modelling and prototyping

How Do Prototypes Gather Feedback From Users and Clients?

Learn how prototypes collect user and client feedback through testing, observation, interviews, and iteration in IB Design Technology.

B3.1 Material selection

How Do You Select a Material Based on Physical, Chemical, and Mechanical Properties?

Learn how IB Design Technology students compare physical, chemical, and mechanical properties to select and justify a suitable material for a product.

B3.1 Material selection

How Do Texture, Form, and Color Influence Material Selection?

Learn how texture, form, and color guide material selection in IB Design Technology B3.1 through function, manufacture, aesthetics, and exam application.

B3.1 Material selection

What Role Do Cost, Availability, and Sustainability Play in Choosing a Material?

Learn how cost, availability, and sustainability influence material selection in IB Design Technology B3.1, including trade-offs and exam technique.

B3.1 Material selection

How Do You Justify a Material Choice Using Research?

Learn how to justify material selection using reliable research, measurable properties, design specifications, comparisons, and testing in IB Design Technology.

B3.2 Structural systems application and selection (HL only)

How Do You Model the Forces Acting on a Structure?

Learn to model structural forces using free-body diagrams, support reactions, equilibrium equations, load paths, and IB Design Technology HL terms.

B3.2 Structural systems application and selection (HL only)

How Do You Calculate Young's Modulus (Stress/Strain)?

Learn how to calculate Young's modulus from stress and strain using correct SI units, a worked example, and IB Design Technology HL exam guidance clearly.

B3.2 Structural systems application and selection (HL only)

Why Do Structures Fail (Overloading, Material Choice, Size, and Shape)?

Learn why structures fail through overloading, poor material choice, unsuitable size, or weak shape, with clear IB Design Technology HL exam guidance.

B3.2 Structural systems application and selection (HL only)

How Do You Interpret a Stress-Strain Graph to Find Yield Strength and Fracture Point?

Learn how to identify yield strength, plastic deformation, ultimate tensile strength and the fracture point on an IB stress-strain graph in exams.

B3.2 Structural systems application and selection (HL only)

How Do You Interpret FEA Data to Identify Why a Structure Failed?

Learn how to interpret FEA stress, displacement, safety-factor, mesh, and boundary-condition data to diagnose failure in IB Design Technology.

B3.2 Structural systems application and selection (HL only)

How Do You Draw a Force Diagram for a Structure?

Learn how to draw a force diagram by isolating a structure, showing loads and reactions, and applying equilibrium in IB Design Technology HL.

B3.2 Structural systems application and selection (HL only)

How Do You Calculate a Safety Factor (SF = Ultimate Load / Allowable Load)?

Learn how to calculate safety factor from ultimate and allowable loads, with an IB Design Technology HL worked example, interpretation, and exam guidance.

B3.2 Structural systems application and selection (HL only)

How Do You Design a Structure With an Appropriate Safety Factor?

Learn how to select and apply an appropriate safety factor using loads, material strength, failure modes and a worked IB Design Technology example.

B3.3 Mechanical systems application and selection (HL only)

How Do You Calculate Mechanical Advantage in Gear, Pulley, Belt, and Lever Systems?

Learn how to calculate mechanical advantage for gears, pulleys, belt drives, and levers using IB Design Technology HL formulas and exam methods.

B3.3 Mechanical systems application and selection (HL only)

How Do You Calculate Velocity Ratio in Gear- and Belt-Driven Systems?

Learn how to calculate velocity ratio for gear and belt drives using teeth, pulley diameters, input speed, and IB exam-ready worked examples.

B3.3 Mechanical systems application and selection (HL only)

How Do You Calculate the Efficiency of a Gear or Belt-Driven System?

Learn to calculate gear and belt-drive efficiency using input and output power, torque, angular velocity, and multi-stage transmission losses for IB exams.

B3.3 Mechanical systems application and selection (HL only)

How Do You Calculate Gear Ratios and Rotational Speed at Different Points in a System?

Learn how to calculate gear ratios and rotational speeds at each point in simple and compound gear systems for IB Design Technology HL examination questions.

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