A $350 Painting Unit With Solvent Restrictions
A high school art department has $350 for a six-week painting unit serving three Art I sections of 30 students, 90 total. The previous teacher used oil paint and turpentine; the district now bans volatile organic solvents in classrooms. One student has asthma and a 504 plan, and another has contact dermatitis from fragrance. The room has one sink, no exhaust hood, 50-minute periods, and 30 assorted brushes. The teacher wants students to learn split-primary color mixing, value structure, and observational composition from still lifes. The department owns 40 canvas boards, a few palettes, and no drying rack. Student-grade acrylics, tempera, and watercolor are available; prices vary. The principal asks for a materials list, safety plan, and assessment plan before purchase.
1. Select the medium and materials within $350 and justify the choice against the learning outcomes and safety constraints.
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The medium must support opaque mixing, layering, and value structure without solvents. Oil is excluded by policy. Watercolor is safe and cheap but less suited to teaching opaque split-primary mixing and revision, so it would undercut the outcome. Tempera is inexpensive, opaque, and rewettable, but it can crack and is less durable for a portfolio. Student-grade acrylic is the best compromise: it is water-based, dries to a durable film, supports layering, and cleans with soap and water. It does require keeping lids on and preventing skin contact.
A defensible budget is roughly $150 to $200 for shared tube sets in a limited split-primary palette: cool and warm red, yellow, and blue, plus white and burnt umber. Five table sets serving six students each can rotate across sections. Spend about $80 on canvas paper or board supplements, $40 on foam trays or palette paper, and the remainder on water cups, rags, mild soap, and a drying rack or shelf. A limited palette teaches mixing better than 24 unrelated colors and controls cost.
2. Explain the safety and accommodation plan for the student with asthma and the student with contact dermatitis.
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Because the district already bans volatile solvents, the plan should keep the room water-based and unscented. No aerosols, spray fixatives, turpentine, or oil mediums. Keep acrylic containers closed when not in use, avoid dust-generating dry pigments, and maintain general ventilation. The student with asthma should have the school nurse's action plan on file, know where the inhaler is, and be permitted to step out if fumes or symptoms occur. Do not single the student out; apply the same water-based rule to everyone.
For contact dermatitis, avoid fragrance and harsh hand sanitizers. Provide nitrile gloves if the student wants them, long-handled brushes, and a barrier tool or palette knife so skin contact is reduced. Use mild soap and water for cleanup, and allow an alternate watercolor or digital option if a reaction occurs. Keep MSDS access and label all containers. The safety plan should be posted and practiced, not just filed.
3. Design the assessment plan for color mixing and composition that is valid across three sections with limited materials.
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Use a common pre-assessment color-mixing chart and a short still-life study, then a common summative still life with the same limited palette. The rubric should separate color relationships, value structure, composition, and craftsmanship. Grade understanding of split-primary mixing by asking students to annotate a color plan: which warm and cool primaries produced the neutral, and why. A photographed setup and consistent lighting across sections reduce inequity. Do not grade the quality of supplies or the neatness of the table.
Formative checks matter more than one final painting: a five-minute color match, a value thumbnail, and a composition sketch. The summative can be one painting plus a reflection or conference. For students who miss class or lack materials at home, keep all work in class and provide shared supplies. Calibrate the three sections with the same anchor examples so a 3 means the same thing in each room. This gives the principal evidence of learning without relying on expensive materials.