MYP Design Year 1 · Unit 3 · Lesson 24
Protect the Payload
L24 · 01

Materials, Joining & Safety

Good making starts before the final build: test the material, practise the joint, and know the safe routine.

Today’s practical lens
M
MATERIALHow stiff, flexible, foldable, or crushable is it?
J
JOINHow can parts connect without wasting material?
S
SAFEUse tools and workspace routines correctly every time.
Use ← → / Space to navigate.Lesson 24 · Practical skills
Learning Focus
Prepare to create
L24 · 02

By the end of today, students can…

01

Compare

simple material behaviors useful for protective structures.

02

Practise

folding, tabs, layering, and controlled tape joints.

03

Demonstrate

safe measuring, cutting, and workspace habits.

DEMONSTRATEShow the skill correctly through what you do.
Criterion C.ii preparationPractical skill rehearsal
Mini-Lesson
Material behavior
L24 · 03
Fold

A crease can turn a flat sheet into a three-dimensional form.

Layer

More than one layer can increase stiffness.

Crush / deform

Some structures can absorb movement by changing shape.

Brace

A rib or triangular support can reduce unwanted bending.

Teacher demonstrates one quick example of each.Structure through form
Joining Techniques
Use enough — not a tape sculpture
L24 · 04
Folded tab

Creates a surface that can be taped or interlocked.

Lap joint

Overlaps two pieces to increase contact area.

Slot / interlock

Can connect pieces with less tape when cut safely.

QUALITY CHECK

A joint should help the structure do its job. More tape is not automatically a better joint.

Keep all techniques within classroom safety rules.Joining fundamentals
Workshop Safety
Four routines
L24 · 05

Measure first

Mark before cutting.

Cut safely

Keep hands out of the cutting path.

Carry tools correctly

Move and store scissors as instructed.

Reset the space

Scraps, tools, and materials return to the correct place.

Teacher demonstrates room-specific expectations.Safety before stations
Workshop
Materials & Joining Stations
L24 · 06
Workshop

Test before you commit to a design.

STATION 01

Fold

Compare flat vs folded stiffness.

STATION 02

Layer

Compare one layer vs two.

STATION 03

Join

Practise a tab or lap joint.

STATION 04

Brace

Use a simple support to reduce bending.

Small material strips are enough.Main workshop
Apply to Your Challenge
What should your chosen idea use?
L24 · 07

Choose techniques because they solve a problem.

Need stiffness?

Consider folds, layers, or braces.

Need controlled movement?

Consider space, deformable forms, or folded structures.

Need a reliable connection?

Choose a joint with enough contact area and clean construction.

Students add notes to their design ideas.Prepare L25
Exit Reflection
Skill before final build
L24 · 08

Finish one sentence.

“One practical technique I may use in my final design is _______ because _______.”

Next lesson

Students select the chosen design, present it clearly, create the planning drawing, and outline the creation plan.