Sustained Investigation

What this unit covers

The topics below follow the published 2-D Art & Design course framework for Unit 1. This unit is worth 60% of the exam, so budget your time against that rather than against how long the unit takes to teach.

Lessons in this unit

• From Broad Idea to a Guiding Inquiry13 min · 3 objectivesExplain what a Sustained Investigation is and how a guiding inquiry drives it · Distinguish a testable, sustained inquiry from a broad theme or single subject · Draft a guiding question specific enough to explore across many works
• Practice, Experimentation & Revision with 2-D Elements and Principles14 min · 3 objectivesDefine practice, experimentation, and revision as distinct engines of investigation · Use the 2-D elements and principles of design as levers to run experiments · Show revision as decisions driven by inquiry rather than fixing mistakes
• Documenting Process, the Written Evidence & Academic Integrity14 min · 3 objectivesAssemble the 15 SI images so they read as a developing investigation · Write the required written evidence to make the inquiry and process explicit · Cite sources correctly and avoid plagiarism and prohibited AI use
• Generating & Researching Ideas: Sketchbook, Influence, Sources14 min · 3 objectivesUse a sketchbook to generate quantity before committing to a direction · Research artists for strategy and method rather than copying imagery · Build your own visual source material to feed an original inquiry
• How an Inquiry Evolves: Decision Points & Dead Ends14 min · 3 objectivesDistinguish repeating a theme from genuinely investigating a question · Let each work’s result generate the next question and document the decision · Judge when a direction is exhausted and should be abandoned
• 2-D Materials & Techniques in Depth15 min · 3 objectivesIdentify the range of media appropriate to a 2-D Art and Design portfolio · Describe what specific 2-D media can and cannot do · Match a material and process to the intent of a particular work
• Photographing & Documenting 2-D Work14 min · 3 objectivesSet up even lighting and square-on framing to photograph flat work accurately · Control color accuracy, cropping, and file quality so the image represents the work · Shoot detail and process images that provide real evidence of investigation
• Reading the SI Rubric & Managing a Year of Work15 min · 3 objectivesDescribe the Sustained Investigation scoring focus areas in your own words · Explain what separates a high row score from a middling one · Plan and audit a year of work so the body of work builds evidence continuously

Every term in Unit 1

All 50 terms we publish for Sustained Investigation, with definitions. Reading them through is the fastest way to find the ones you cannot define — then drill those in cram mode until you can produce them without the prompt.

Sustained Investigation

15 images showing practice, experimentation and revision driven by one inquiry, plus written responses. Two-thirds of the portfolio score.

Practice, experimentation, revision

Practice: repeated, deliberate work that builds skill and knowledge. Experimentation: changing one variable on purpose to see what it does. Revision: altering earlier decisions in response to what an attempt revealed. Readers want visual evidence of all three.

Acrylic vs oil in practice

Acrylic dries in minutes and layers immediately; oil stays open for days and blends wet into wet. The medium determines what kind of decision is even possible.

Watercolor discipline

Light to dark, and the paper is the white. Planning where nothing will be painted is the whole method.

Gouache

Opaque water media that can be reworked and that dries matte and slightly shifted in value. The value shift on drying must be tested, not assumed.

Screen printing

Ink pushed through a stencil on mesh. Naturally produces flat color and editions, and separations are excellent process evidence.

Relief printing

Cutting away what will not print. Irreversible, so state proofs pulled at each stage are ideal documentation of iteration.

Intaglio

Ink held in incised lines below the surface — etching, drypoint, engraving. Produces line quality no other process gives.

Monotype

A single print from a painted plate. Unrepeatable, which makes it a fast tool for testing composition and color.

Cyanotype and alternative photographic processes

Light-sensitive coating on paper or cloth. Cheap, distinctive, and legible as experimentation in a sequence.

Photography within a 2-D portfolio

Fully admissible. Contact sheets, alternative crops and edit versions are strong process documentation.

Digital layering and version history

Screenshots of layer stacks and saved versions evidence process that a flattened export erases.

Textile and fiber approaches in 2-D

Dyeing, stitching and weaving on a flat plane. They introduce actual texture into a 2-D investigation.

Working in a limited palette

Two colors plus white forces value and temperature decisions. One of the most productive constraints available.

Grisaille and underpainting

Establishing value in monochrome before color. It separates two hard problems that most students attempt simultaneously.

Scale of mark relative to format

A brush size that works at A4 is invisible at wall scale. Changing format without changing tools produces flat, undifferentiated surfaces.

Documenting a series side by side

One image showing several works together can communicate development faster than four separate images.

Editions and variation

Printing a run and altering some impressions is a clean way to evidence controlled experimentation.

Inquiry that names a visual problem

The strongest 2-D inquiries name something you can change in the work: a color relationship, a spatial ambiguity, a compositional constraint. Subject-only inquiries produce illustration.

Testing one variable at a time

Change palette, or scale, or composition, but not all three between consecutive works. Isolating a variable is what makes development visible.

Reading a sequence for development

A reader should be able to say what you learned between image four and image five. If they cannot, the sequence needs reordering or the gaps need process images.

Documenting color decisions

Include a discarded palette or a color test. Color is the hardest 2-D decision to evidence and the easiest to assert without proof.

Working from your own photographs

The safest source material, and it lets you document the reference alongside the work. Shooting your own reference is itself experimentation.

Appropriation and transformation

Using existing imagery requires substantial change in form, content or meaning plus acknowledgment. Changing medium or cropping is not transformation.

Generative AI is not permitted for artwork

A rule about the work, not only the writing. Documented process helps demonstrate authorship.

The two written responses

One states the inquiry, one describes how materials, processes and ideas developed it. Both are tightly character-limited, so every clause must carry weight.

Writing that names evidence

Point to specific images: "in images 6 through 9 I limited the palette to two complements to test whether…". Generalities about growth score nothing.

The commonest written-response failure

Describing what the images depict. The reader can see that; they cannot see why you made the choices.

Series as structure

Several works answering one question. It gives a reader the comparison they need and gives you a reason to make the next piece.

Deliberate constraint

Restricting palette, format or material forces invention. A stated constraint is easy to evidence and reads as investigation rather than habit.

Surface and substrate

Paper weight, canvas, board, panel and fabric each change how media behave. Changing substrate is a legitimate and visible experiment.

Ground and underpainting

A toned or colored ground changes every subsequent decision. Documenting the ground explains color relationships a finished image cannot.

Layering and glazing

Transparent layers over a dry underlayer build depth impossible in one pass. A process image mid-layer is worth more than the finished piece alone.

Collage and mixed media

Combining materials should answer a question about surface, history or juxtaposition. Combination for texture alone reads as decoration.

Printmaking in a 2-D portfolio

Relief, intaglio, screen and monotype all qualify. Editions and state proofs are excellent evidence of iteration and revision.

Digital work and photography

Fully admissible. Document layers, versions and settings; a digital piece with no visible process is harder to evidence than a physical one.

Scale as a variable in 2-D

The same composition at postcard and at wall scale is not the same work. Changing scale changes mark, viewing distance and the body of the viewer.

Revision that is visible

Photograph before and after a major change. A reader cannot credit a revision they cannot see.

Including work you dislike

If it produced a decision, it belongs. The portfolio evidences investigation, not a curated best-of.

Photographing glossy or textured surfaces

Cross-polarize or light at 45 degrees from both sides to kill specular reflection. Varnish and heavy impasto are the usual culprits.

Inquiry

A question that drives a body of work, not a subject or a theme. "Portraits" is a subject; "how does obscuring a face change who the viewer thinks it is?" is an inquiry.

What readers score in the written responses

Whether the writing identifies a genuine question, and whether the images show that question being investigated and revised over time. Not how good the work looks.

The commonest written-response mistake

Describing what you made instead of what you were asking. "I drew my grandmother in charcoal" earns nothing; "I tested whether removing the background made the figure read as isolated" does.

Evidence of revision

Two versions of a related work with a visible, explainable change. A portfolio of 15 unrelated finished pieces cannot show revision no matter how skilled it is.

Why 15 images and not 15 pieces

Detail shots and process images count. Showing the same work at two stages is often more useful than adding another finished piece.

Writing about failure

An experiment that did not work is strong evidence of investigation, provided you say what you learned. Readers reward the thinking, not the success rate.

Sequencing the images

Order them so the investigation reads as a development. Chronological is not automatically clearest; grouping by what each image tested often is.

Materials, processes and ideas

The written prompt asks about all three. Answering only about materials is the second most common way to lose the point.

Scope of an inquiry

Narrow enough to test in 15 images, broad enough to sustain a year. "Color" is too broad; "one exact shade of red" is too narrow.

Documenting as you go

Photograph work when it is made, not in May. Reconstructing a year of process from finished pieces is where most portfolios lose their evidence of revision.

What examiners penalize here

• When you photograph work for the SI, deliberately include **evidence of process and revision** — studies, alternate versions, in-progress shots — not only polished finals. Some of your 15 images should show the *investigation* itself. A portfolio of 15 finished, unrelated pieces reads as a gallery, not an inquiry, and loses the investigation row.
• Treat the **written evidence** as scored real estate, not a formality. State your inquiry as a question, then connect specific **materials, processes, and ideas** to it, and point at an experiment or revision. Writing that merely names a topic and praises the effort throws away easy points on the investigation row.
• When you sequence your images, put a **decision point** where a reader can see it: the last work of an exhausted direction next to the first work of the new one. That adjacency does more to demonstrate a developing inquiry than any single polished piece, because the change of direction is visible rather than merely claimed in the writing.
• Photograph every piece **the day it is finished**, and photograph stages as you make them. Documentation done continuously is a fifteen-minute habit; documentation postponed becomes a frantic week of bad photographs, and any process stage you covered over is unrecoverable. Check current file and format requirements in the AP Digital Portfolio well before the submission window, not during it.
• Read the current published rubric yourself, early, and translate each row into a checklist question you can ask of your own images. Students who have never read the rubric routinely optimize for the wrong thing — polish and quantity — while the rows are asking for visible inquiry, targeted experimentation, documented revision, and material choices that belong to the idea.

Practice 2-D Art & Design

Our practice bank is drawn from across the whole course rather than filtered to one unit, which is closer to how the exam asks anyway — it will not tell you which unit a question is testing.

Questions about this unit

All 2 units of AP 2-D Art and Design

1. Unit 1 · Sustained Investigation
2. Unit 2 · Selected Works