切割与剖分的形体素描
原文链接：https://createartwithme.com/sliced-diced-form-drawing/
日期： 2016-01-17
作者： 米歇尔·伊斯特（Michelle East）
分类： AP美术工作室（高中高阶美术）、美术课程、素描课程、高中美术、非具象艺术
标签： 六种基本形体、高中高阶美术课、运用六种基本形体的切割与剖分进行构图、圆锥体、轮廓表面线、立方体、圆环体、形体素描、光线如何影响形体的明度、如何切割形体、切割与剖分的形体素描、视点、棱锥体、senior.billings.k12.mt.us、形体切割素描、球体
高中高阶美术课——切割与剖分的形体素描
教学资源： 原始创意源自 senior.billings.k12.mt.us（致谢原作者——该课例最初由该校教师设计，但我仅找到一张图片，未查到具体姓名）
以下是我所授高中美术课完成这一精彩素描的过程……
第1–2课时
教学目标： 学生将绘制六种基本三维形体：球体、圆柱体、圆环体、圆锥体、棱锥体及立方体/长方体。学生将学习如何准确“切割”这些形体以展现其内部结构，并运用完整明暗进行表现。随后，学生将运用这六种基本形体的切割与剖分形态创作一幅构图。
课前准备： 准备小型几何模型（建议每2–4人一组配备一套）
教学实施／活动： 六种基本形体（教师示范引导）
- 六种基本形体： 球体、圆柱体、圆环体、圆锥体、棱锥体及立方体/长方体
- 练习依据直接观察绘制形体。
- 视点——形体如何随观察角度变化而变化？
- 练习从两个及以上不同视点绘制同一形体。（形体切割将在本课后续环节展开）
- 轮廓表面线——表现物体表面深度变化的线条
- 各类形体上的轮廓线呈现何种形态？
- 练习用轮廓表面线绘制形体（注意：曲面需用曲线表现，平面需用直线表现；*最好沿边缘走向绘制）
- 光线如何影响形体的明度？
- 铅笔明度与明暗表现练习表
- 在强聚光灯下练习绘制形体，并使用全套绘图铅笔完成完整明暗表现。
- [
## Drawing Pencil Set Value and Shading Worksheet
$1.75](https://createartwithme.com/shop/lesson-plans-worksheets/art-technique-lesson-plans-and-worksheets/drawing-lessons-worksheets-pdf/drawing-pencil-set-shading-worksheet/)加入购物车
活动一：形体绘制与切割方法
教师示范指导（2–3课时）： 演示六种基本形体的绘制方法，以及如何对其进行切割以形成剖面（在素描本中绘制）。详见下方讲义。
所需材料： 几何模型、绘图铅笔、素描本、聚光灯
点击下方图片可查看大图（所有图片版权归属米歇尔·伊斯特）
项目目标： 运用六种基本形体——球体、圆柱体、圆环体、圆锥体、棱锥体及立方体/长方体，创作一幅富有动感的构图。在每种形体上绘制切口、剖面与细分割。保持统一光源，并使用全套绘图铅笔，以完整的明度范围完成整幅作品。
所需材料： 9×12英寸或12×18英寸素描纸、全套绘图铅笔、直尺
项目说明：
草图阶段
- 在素描本中至少绘制两幅缩略草图（计入小测成绩），尝试调整六种基本形体在构图中的位置与大小：球体、圆柱体、圆环体、圆锥体、棱锥体及立方体/长方体。
- 通过将较大形体（同时具备最强明度对比）置于三分法构图的任一交点处，确立画面视觉中心。
- 每种形体至少需出现两次。此为最低数量要求——请根据最佳设计效果自由增加数量！
- 运用形体间的重叠关系营造画面纵深感；变化形体尺寸与视点以增强趣味性。
终稿绘制
- 轻淡地将设计稿转绘至一张12×18英寸素描纸上（显然需放大原草图）。可借助直尺与圆形模板（如杯口等）辅助作图。
- 在最终作品中，对各形体进行剖开与切割处理，使观者得以“透视”至其背面；开设各类开口以增强视觉趣味。
- 允许少量形体保持完整未切割状态，但每种形体至少须有一处进行切割或剖分处理。
明暗表现
保持统一光源，并以完整的明度范围（从纯黑至纯白）完成整幅作品的明暗表现。
评价标准： 视觉表现——学生是否准确绘制了静物中的各类形体？画面空间利用是否合理？各形体是否体现一致的光照方向？每个形体是否均呈现完整的明度层次？
若您引用本文内容（文字或图片），请务必回链至我的博客 Create Art with ME。
部分学生作品范例（点击图片查看完整作品）
延伸观察性素描技能课程：
Original: https://createartwithme.com/sliced-diced-form-drawing/
Date: 2016-01-17
Author: Michelle East
Categories: AP Studio Art (Advanced HS Art), Art Lessons, Drawing Lessons, HS Art, non-objective
Tags: 6 basic shapes, Advanced High School Art Lesson, composition using cuts and slices of the 6 basic shapes, Cone, Contour Surface Lines, cube, Cylinder, Donuts, Drawing Forms, How does lighting affect values on forms, How to Slice them, liced Diced Form Drawing, Point of view, Pyramid, senior.billings.k12.mt.us, slice forms drawing, Sphere
Resources: Original idea Found on senior.billings.k12.mt.us (credit goes to them-they are the original author of this lesson although I can not find anything other than a picture-no names that I can find)
This is how my high school art class created this cool drawing…
DAY 1-2
Objectives: Students will draw the 6 Basic 3D forms: Sphere, Cylinder, Donuts, Cone, Pyramid, & Cube/Rectangular Prism. They will learn how to accurately “slice” through the forms to see inside them and render with full shading. They will then create a composition using cuts and slices of the 6 basic shapes.
Preparation: Get out small geometric forms (I like to have one set per 2-4 people)
Delivery/Activity: 6 Basic Forms (Teacher Guided Demo)
- 6 Basic Forms: Sphere, Cylinder, Donuts, Cone, Pyramid, & Cube/Rectangular Prism
- Practice drawing forms from direct observation.
- Point of view-how do forms change based on your viewpoint of them?
- Practice drawing forms from 2+ different viewpoints. (Slicing the form is later in the lesson)
- Contour Surface Lines–Lines that show the variations in the depth on a surface
- What do contour lines look like on various forms?
- Practice drawing forms with contour surface lines (remember curved surfaces need curved lines, flat surfaces need flat lines. *Best to follow the edges)
- How does lighting affect values on forms
- Drawing Pencil Set Value and Shading Worksheet
- Practice drawing forms with strong spot light, render with full shading with drawing pencil set.
- [
## Drawing Pencil Set Value and Shading Worksheet
$1.75](https://createartwithme.com/shop/lesson-plans-worksheets/art-technique-lesson-plans-and-worksheets/drawing-lessons-worksheets-pdf/drawing-pencil-set-shading-worksheet/)Add to cart
Teacher Guided Demonstration (2-3 Classes) How to draw 6 basic forms, how to slice into them to make cut-out (draw in sketchbooks). See handouts below.
Materials Needed: Geometric forms, drawing pencils, sketchbook, spot lights
Click on the images below for full view (all images Copyright Michelle East)
Project Objectives: Create a dynamic composition using the six basic forms: Sphere, Cylinder, Donuts, Cone, Pyramid, & Cube/Rectangular Prism. Draw in cuts, slices & dices into each of the forms. Keep a consistent light source and render the composition with FULL range of values using your drawing pencil set
Supplies: 9×12′ or 12×18″ Drawing Paper, Drawing Pencil Sets. Rulers
Project Instructions:
SKETCH
- In your sketchbook, draw out at least 2 thumbnail sketches (Quiz Grade) experimenting with the placement and size of the six basic forms in your composition: Sphere, Cylinder, Donuts, Cone, Pyramid, & Cube/Rectangular Prism.
- Create a focal point by placing your larger object (also with the most value contrast) in one of the Rules of Thirds.
- You must include at least 2 of each form. That is the MINIMUM amount- draw in as much as you need to create the best design!
- Use overlapping of forms to create depth in your drawing. Vary the sizes & view points for interest.
DRAW FINAL
- LIGHTLY draw your design onto a sheet of 12×18” drawing paper. You will obviously enlarge your design. You may use ruler & circle (for template)
- In your final design, cut open and slice up the forms so we can see through to the back side. Create openings to give interest.
- It is okay to have a few forms that are not cut or sliced, but at least on of each type of form must have cuts or slices.
SHADING
Keep a consistent light source and render the composition with a FULL range of values from black to complete white.
Evaluation: Visual-did students accurately draw forms in their still life, how did they use the space on the paper, does each form have consistent lighting, is each form rendered with a full range of values?
If you choose to use the information in this post (written or photo), please link back to my blog Create Art with ME.
A Few Student Examples (click on picture for full drawing)
Additional Observational Drawing Skills Lessons:
