海螺粉笔画
原文链接：https://createartwithme.com/sea-shell-pastel-drawing/
日期： 2014-01-06
作者： Michelle East
分类： 五年级、六年级、AP工作室艺术（高中高阶美术）、美术课、构图课、素描课、干粉笔课、高中美术、初中美术、静物
标签： 素描课、高中素描课、观察能力素描训练、干粉笔、干粉笔技法、小学美术、高中美术、初中美术、粉笔课、海螺素描、海螺粉笔画、目测测量法
本海螺粉笔画课程适用于小学高年级、初中或高中美术教学。主要目标是训练学生的观察能力与干粉笔表现技法。
所需材料： 粉笔——24色软质粉笔套装（绘画、剪贴簿制作等用途，混色）
、纸笔与卷笔器套装
、纸巾、废纸
教学目标： 学生将运用良好的观察能力，准确描绘一枚海螺，并以干粉笔进行完整明暗表现；同时复习基础粉笔技法。
课前准备： 准备好海螺实物与粉笔，布置教师示范区域
教学实施：
三角形构图
三角形结构指画面中主要物体大致按三角形或金字塔形布局排列。
视角选择
- 选取富有表现力的视角，突出高光与阴影。
- 尝试调整物体相对于地平线的位置。
素描观察能力训练
- 从最外轮廓开始，用极轻的线条概括形状，优先勾勒最大的那枚海螺；全程注意尺寸比较。
- 运用目测测量法，判断不同线条与形状之间的对齐关系。
- 牢记口诀：“先画轻，画准再加重”——初稿务必轻淡，待造型准确后再加深线条。
- 完成精准的线稿后，即可开始用粉笔添加明度层次。粉笔技法
粉笔技法
教师引导示范（以下为简化版；完整教案涵盖更多技法！）
练习单与完整粉笔技法教案
握笔方式
- 笔尖或笔缘： 最基础的用法是像握铅笔或钢笔一样，用粉笔末端作画。通过调节施加的压力来改变线条粗细：压力越大，纸上粉笔色料越多；画细线时则需轻压，或改用笔缘。
- 笔侧： 用粉笔侧面可快速铺出大块色彩。在粉笔纸上施加不同压力，可形成不同质感效果。
粉笔调和——与其他媒介不同，粉笔不预先调和，而是在纸上混合。
- 视觉调和： 即将不同颜色并置，靠人眼在一定距离上自然融合，或直接在纸上叠加调和。
- 工具调和： 使用纸笔、卷笔器、纸 stump（纸擦笔）、橡皮泥（可塑橡皮）、布料、眼部化妆棉、粉底海绵、脱脂棉球或棉签等工具。此类方法调和更精准，但易将粉笔从纸上擦起。
- 手指调和（手部调和）： 手指调和通常不会擦起粉笔，仅将其在纸上推移——这是我的首选调和方式。注意定期清洁手指，避免已调和的颜色污染画面；建议随时备好一盒湿纸巾或湿润纸巾。
创作项目：海螺粉笔画
项目目标： 创作一幅原创海螺静物构图，以干粉笔完成表现；运用三角形构图法组织画面，并以干粉笔呈现海螺及衬面的完整明度范围。
操作步骤：
1. 挑选3–4枚海螺（其中仅限1枚蛤蜊），置于带台灯的静物台前。
2. 运用三角形构图法组织海螺静物，选择一个富有趣味性的视角。
3. 使用指定iPad拍摄该构图照片，裁剪至紧凑构图，使海螺周围留白极少。
4. 将照片导入Photoshop Express软件编辑——增强对比度与饱和度。
5. 打印一张黑白稿（用于临摹）。
6. 在有色纸上用铅笔极轻地起稿。纸张颜色选项请向我咨询。
7. 以干粉笔完成画面，呈现海螺及衬面的完整明度范围。
Ken
Jane
Laura
Amber
JaLyn
Rosy
Becca
本课程的变体方案：
若您选用本教案或转载相关内容，请务必回链至我的博客：Create Art with ME*
延伸观察能力素描课程：
PVC管炭笔素描
由小至大——放大素描
奇趣麦圈交叉排线素描——以线条表现明度
切分与解构形态素描
人体比例——木质人偶素描（两课时）
乐高彩铅素描
乐高炭笔素描
海螺粉笔画
Sea Shell Pastel Drawing
Original: https://createartwithme.com/sea-shell-pastel-drawing/
Date: 2014-01-06
Author: Michelle East
Categories: 5th Grade, 6th Grade, AP Studio Art (Advanced HS Art), Art Lessons, Composition Lessons, Drawing Lessons, Dry Pastel Lessons, HS Art, MS Art, Still Life
Tags: drawing lesson, drawing lesson for high school, drawing observational skills, dry pastel, dry pastel techniques, elementary art, HS art, MS Art, pastel lesson, sea shell drawing, sea shell pastel, sight measuring
The Sea Shell Pastel Drawing Lesson can apply to upper elementary art, middle school art, or high school art. The main objective of this to practice drawing observational skills as well as pastel techniques.
Materials Needed: Pastels- 24 Soft Chalk Pastels Set for Art Drawing, Scrapbooking & More -Assorted Colors (24 Colours), Stumps And Tortillions Set, paper towels, scrap paper
Objective: Students will use good drawing observational skills to draw a sea shell accurately and render with full shading using dry pastels. They will review basic pastel techniques.
Preparation: Get out sea shells and pastels, set-up a teacher demo area
Delivery:
Triangle Composition
Triangle Structure The main objects of a composition are loosely arranged in a triangle or pyramid shape.
Point of View
- Choose An Interesting Point Of View With Highlights & Shadows.
- Experiment with location to horizon line.
Drawing Observation Skills
- Begin to LIGHTLY block in the shapes beginning with the largest shell. Make sure to do size comparisons ALL along the way.
- Use sight measuring techniques to see what lines/shapes line up with each other.
- Remember the motto “draw light until its right”, it is better to draw lightly first, get the drawing right, then go darker with your lines.
- Once you have an accurate drawing of what you see, you may begin to add value using pastels. Pastel Techniques
Pastel Techniques
Teacher Guided Demo (simplified version below, full lesson covers more techniques!)
Practice worksheet & Full Pastel Techniques LessonHolding the Pastel
- Tip: or Edge: The simplest way to use a pastel is to draw with the end, holding it as you would a pencil or pen. Alter the thickness of the line by varying the pressure you’re applying to the pastel. The harder you press, the more pastel you’ll be putting down on the sheet. For thinner lines, press more gently or use the edge.
- Side: To create large blocks of color, use the side of a pastel stick. Altering the pressure will create different degrees of texture on the pastel paper.
Blending Pastels- Unlike other mediums, pastels are not mixed before putting them on the paper.
- Optical Blending: which is achieved by having colors in close proximity and blending, where the pastel is mixed on the paper.
- Tool Blending: paper tools such as the tortillon, torchon, and paper stump; putty (or kneaded erasers) rubbers, cloths, eye makeup applicators, foundation applicators, and cotton wool (balls or buds). These allow for more precise blending, but also tend to lift the pastel off the paper.
- Finger Blending: (or hand) Using the finger does not typically lift the pastel off the paper, it just moves it around-this is my preferred method of blending. Remember to clean your finger regularly to avoid contamination of the painting with colors previously blended. Keep a box of wet-wipes or damp paper towels handy at all times.
Project: Sea Shell Pastel Drawing
Project Objective: Create an original composition of sea shells render with dry pastels. Use the triangle composition method to compose the shell still life and render use dry pastels to apply FULL value ranges to the shells and surfaces.
Instructions:
1. Choose 3-4 sea shells (only one clam) and go to a still life set up with a lamp.
2. Use the triangle composition method to compose the shell still life. Choose an interesting point of view.
3. Use your assigned iPad to photograph the composition. Crop in pretty tight so there is not much negative space around the shells.
4. Bring photo into Photoshop Express & edit-increase contrast and saturation.
5. Send to printer for a black & white copy (to draw from).
6. Draw the composition LIGHTLY in pencil on toned paper. See me for color options.
7. Render the drawing with dry pastels to apply FULL value ranges to the shells and surfaces.
Ken
Jane
Laura
Amber
JaLyn
Rosy
Becca
Variations to this Lesson:
If you choose to use this lesson or to repost it, please link it back to my blog. Create Art with ME
Additional Observational Drawing Skills Lessons:
PVC Pipe Charcoal Drawing
Small to BIG – Enlargement Drawing
Chex Mix Cross-Hatching Drawing – Value Through Line
Sliced and Diced Form Drawing
Body Proportions – Wooden Mannequin Drawings – 2 Lessons
LEGO Colored Pencil Drawing
LEGO Charcoal Drawing
Sea Shell Pastel Drawing
本海螺粉笔画课程适用于小学高年级、初中或高中美术教学。主要目标是训练学生的观察能力与干粉笔表现技法。 
握笔方式 