Lesson Notes By Weeks and Term v3 - Senior Secondary 1
Introduction to Modelling
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Introduction to Modelling
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Subject: Visual Art
Class: Senior Secondary 1
Term: 2nd Term
Week: 10
Theme: 3 Dimensional Art
This page supports the lesson note with a companion video and a short classroom-ready summary.
For class groups and homework, share this lesson page so learners also get the summary, objectives, and full lesson context.
This section provides in-depth explanations of the core concepts related to "Introduction to Modelling," particularly focusing on clay as the primary modelling material.
This section outlines a sequence of activities for the teacher and students during the lesson.
A. Introduction (10 minutes)
Teacher Activity: Begins by displaying various examples of modelled forms (e.g., a simple clay pot, a small sculpture, pictures of Nigerian terracotta art from Nok, Ife, Benin). Asks students to identify the materials used and how they think these forms were made.
Introduces the topic: "Introduction to Modelling," defining modelling as an additive sculptural process. States the learning objectives for the lesson in an accessible manner.
Student Activity: Observe the displayed examples and engage in a brief discussion about the materials and methods. Listen attentively to the teacher's introduction and the stated learning objectives.
B. Exploration of Clay Types and Properties (20 minutes)
Teacher Activity: Presents samples of different types of clay if available (e.g., local earthenware, plasticine). Explains each type of clay (e.g., earthenware, stoneware, plasticine) with reference to its characteristics and uses, particularly in Nigerian contexts.
Demonstrates the properties of clay: Plasticity: Wedges a lump of clay, showing how it bends and holds shape.
Texture: Passes around small samples for students to feel.
Colour: Shows natural colours of wet and dry clay. Explains shrinkage and porosity conceptually, linking them to the drying and firing process.
Student Activity: Observe the clay samples and listen to explanations. Handle and feel different clay types (if available) to understand texture. Engage in a brief Q&A session about the properties. Take notes on key definitions and concepts.
C. Methods of Making Ceramic Works and Tools (20 minutes)
Teacher Activity: Explains the primary hand-building methods: Pinch, Coil, and Slab, using visual aids (charts, diagrams, or quick demonstrations). Emphasises the steps for each method, especially for Pinch and Coil as they are more accessible for beginners. Introduces common ceramic tools, showing actual tools if available, and explains their function one by one. Demonstrates how to "score and slip" for joining clay pieces effectively.
Student Activity: Listen and observe the explanations and demonstrations of hand-building methods. Identify and learn the names and functions of various ceramic tools. Ask questions for clarification on techniques and tool usage. Note down the methods and tools.
D. Practical Demonstration and Guided Practice (40 minutes)
Teacher Activity: Provides each student with a prepared lump of earthenware clay and access to water. Gives a step-by-step demonstration of making a simple pinch pot, clearly articulating each action. Circulates among students, providing individual guidance, corrective feedback, and encouragement as they attempt to make their own pinch pots. Reinforces safety precautions regarding clay dust and handling.
Student Activity: Follow the teacher's demonstration carefully. Attempt to make a simple pinch pot using the provided clay. Practice wedging (if time permits) and shaping the clay. Seek assistance from the teacher when encountering difficulties. Focus on achieving even wall thickness and a consistent form.
E. Review and Conclusion (10 minutes)
Teacher Activity: Leads a brief review of the day's lesson, asking students to recall types of clay, properties, methods, and tools. Collects the finished pinch pots for initial assessment (formative). Summarises the importance of modelling in art and craft, linking back to Nigerian cultural heritage. Assigns a simple take-home task or provides instructions for further drying of the clay works.
Student Activity: Actively participate in the review by answering questions. Present their completed pinch pots. Listen to the summary and instructions for follow-up.
Materials for the Lesson: Samples of various clays (e.g., earthenware, plasticine) Visual aids (charts, pictures of Nigerian pottery/sculpture) Actual ceramic tools (cutting wire, modelling tools, sponge, needle tool, rib) Well-wedged earthenware clay for each student (size of an orange) Water containers for each student group Plastic sheets or newspaper for work surfaces Drying racks or space for completed clay works The following questions are designed to reinforce understanding of the lesson's objectives.
Question 1: List two common types of clay found or used in Nigeria and state one characteristic for each that makes it suitable for modelling.
Solution 1: Type 1: Earthenware Clay Characteristic: High plasticity and availability, making it easy to work with by hand for traditional pottery and sculptures. It fires at relatively low temperatures, which is suitable for local kiln setups.
Type 2: Modelling Clay (Plasticine)
Characteristic: Extremely pliable and non-drying, allowing for extended manipulation and reuse without the need for firing, making it ideal for classroom practice and initial design sketches.
Commentary: This question directly addresses Performance Objective 1 and 2, focusing on the identification and properties of clay relevant to the Nigerian context.
Question 2: Identify two properties of clay that a potter must consider when making a large water storage pot, and explain why each property is important.
Solution 2: Property 1: Plasticity Explanation: Plasticity allows the clay to be shaped and manipulated (e.g., using the coil method) without cracking or collapsing under its own weight as the pot grows in size. Sufficient plasticity ensures the walls can be built up and retain their form.
Property 2: Shrinkage Explanation: Clay shrinks as it dries and fires. A potter must account for this shrinkage to ensure the final fired pot is the intended size and does not crack due to uneven drying or firing. If different parts of the pot shrink at different rates, it can lead to structural failure.
Commentary: This question addresses Performance Objective 2 and connects it to a practical, real-world application common in Nigeria.
Question 3: Describe, in sequence, the steps involved in joining two pieces of clay together securely using the 'score and slip' method.
Solution 3: Score the Surfaces: Using a needle tool or knife, scratch cross-hatch lines (like a tic-tac-toe grid) on both clay surfaces that are to be joined. This creates a rough texture, increasing the surface area for bonding.
Apply Slip: With a brush or finger, apply a generous amount of slip (clay mixed with water to a creamy consistency) to both scored surfaces. The slip acts as a clay 'glue'.
Press and Blend: Firmly press the two clay pieces together, wiggling them slightly to ensure good contact and to push out any air bubbles. Then, use a modelling tool or finger to blend the seam, reinforcing the joint and making it smooth.
Commentary: This question addresses Performance Objective 3 by detailing a crucial aspect of ceramic construction, applicable to all hand-building methods.
Question 4: Mention two ceramic tools and briefly explain their primary function in making a clay form.
Solution 4: Tool 1: Needle Tool Function: Used for scoring clay surfaces before joining, cutting thin strips of clay, piercing air holes, or marking details on a wet clay form.
Tool 2: Modelling Tool (e.g., wooden sculpting tool)
Function: Used for shaping, smoothing, blending, and adding textures or details to the clay surface. They come in various shapes to achieve different effects.
Commentary: This question directly addresses Performance Objective 4, testing knowledge of practical tools.
A. Differentiation (General Strategies): Visual Aids: Utilize plenty of diagrams, charts, and real-life examples of clay forms and tools to cater to visual learners.
Demonstration: Provide clear, step-by-step demonstrations for all practical activities.
Peer Support: Pair more skilled students with those needing extra help during practical sessions.
Verbal Reinforcement: Continuously explain and re-explain concepts using different phrasing for auditory learners.
Kinesthetic Learning: Emphasize hands-on practical activities as the primary mode of learning for this topic.
B. Remediation (For Struggling Learners): Simplified Task: For students struggling with the pinch pot, guide them to simply create a consistent ball of clay and then a very shallow, wide dish, focusing primarily on achieving even thickness rather than a complex form.
One-on-One Guidance: Provide direct, individualized support during practical sessions, breaking down steps into smaller, manageable chunks.
Revisit Basics: Review the properties of clay (plasticity, workability) and basic tool functions with small groups. Allow extra time for practice with simple shaping exercises using plasticine or small amounts of clay.
Resource Sheet: Provide a simplified handout with key terms, definitions, and illustrated steps for the pinch method.
C. Extension (For High-Achieving Learners): Advanced Form Exploration: Challenge these students to combine methods (e.g., start with a pinch pot base and add coils to build height) or to create a more complex form (e.g., a simple animal figure, a pot with an added handle or decorative elements).
Research Project: Assign a mini-research task on a specific Nigerian pottery tradition (e.g., Nupe pottery, Kwali pottery, Ife terracotta) focusing on materials, techniques, cultural significance, and notable artists. Students can present their findings to the class.
Tool Fabrication: Encourage them to experiment with improvising simple modelling tools from available materials (e.g., smooth stones, dried sticks, pieces of plastic) and describe their functions.
Introduction to Glazing Concepts: Briefly introduce the concept of glazing (function, types of glazes) and its role in finishing ceramic wares, prompting them to think beyond unglazed forms. Clay is a fine-grained natural rock or soil material that combines with water to form a plastic, mouldable mass. Different types of clay are suitable for various purposes based on their composition and firing properties.
Earthenware Clay: Description: This is the most common and widely available type of clay. It contains a high percentage of iron and other mineral impurities, which give it a reddish, brownish, or buff colour when fired. It matures at relatively low temperatures (around 950°C - 1100°C).
Properties: It remains porous after firing, meaning it will absorb water unless glazed. It is relatively easy to work with due to its good plasticity.
Nigerian Context: Widely used in traditional Nigerian pottery (e.g., Igbo, Yoruba, Hausa pottery) for domestic wares, water pots, cooking pots, and ritual objects. It is often found locally.
Stoneware Clay: Description: Finer-grained than earthenware and contains fewer impurities. It fires at higher temperatures (1200°C - 1300°C) and becomes very hard, dense, and non-porous (vitrified) without glazing. Colours range from grey to brown.
Properties: Excellent plasticity, high strength, and durability after firing. Suitable for functional pottery like dinnerware, tiles, and architectural ceramics.
Nigerian Context: Increasingly used in modern ceramic workshops for durable and hygienic wares. While not as common for traditional use as earthenware, it's becoming more popular.
Porcelain Clay (Kaolin): Description: The purest form of clay, primarily composed of kaolinite. It is white, translucent, and fires at very high temperatures (1250°C - 1400°C).
Properties: Low plasticity, making it harder to work with than earthenware or stoneware. After firing, it is extremely hard, non-porous, and can be translucent.
Nigerian Context: Kaolin deposits exist in Nigeria (e.g., Plateau, Katsina, Ondo States) and are used in the production of electrical insulators, high-quality sanitary wares, and sometimes blended with other clays for finer pottery. Not typically used by SS1 students due to difficulty in handling and high firing requirements.
Ball Clay: Description: Highly plastic, fine-grained, sedimentary clay. It fires to a light colour (buff to off-white). Not used alone due to high shrinkage and dark firing.
Properties: Added to other clay bodies (like stoneware or porcelain) to increase plasticity and workability.
Nigerian Context: Can be found in some areas and used as an additive in commercial clay preparations.
Modelling Clay (Plasticine): Description: An oil-based, non-drying, synthetic clay. It is not fired.
Properties: Extremely pliable, reusable, and never hardens. Available in various colours.
Nigerian Context: Useful for preliminary sculptural sketches, classroom demonstrations, and for students to practice modelling techniques without the need for firing. Often used in schools where access to firing kilns is limited.
This detailed step-by-step guide is for the teacher to demonstrate and for students to follow.
Objective: To make a simple pinch pot (a small bowl or cup).
Materials: Well-wedged lump of earthenware clay (about the size of an orange) Water container Sponge Modelling tool (optional, for smoothing) Cutting wire (optional, for cutting clay) Plastic sheet or newspaper (to work on)
Steps: Prepare the Clay: Begin with a thoroughly wedged ball of clay. It should be consistent in texture, free of air bubbles, and have good plasticity.
Form the Initial Ball: Gently roll the clay into a smooth, spherical ball in your hands. This ensures an even start and helps remove minor imperfections.
Insert the Thumb: Hold the clay ball in one hand. With the thumb of your dominant hand, press firmly into the exact centre of the ball, stopping about 1.5 cm from the bottom to create a thick base. Do not press through the clay.
Begin Pinching and Rotating: Place your thumb inside the pot and your fingers on the outside. Gently pinch the clay between your thumb and fingers, moving slowly around the base. As you pinch, rotate the pot with your other hand. This ensures even thinning. Work your way gradually up the sides of the pot, pinching small amounts of clay at a time.
Thinning the Walls: Aim for an even wall thickness of about 0.5 – 0.8 cm. Avoid making the walls too thin too quickly, as this can lead to collapse or cracking. If walls become uneven, gently press back areas that are too thin.
Shaping the Form: As you pinch, you can guide the shape. To widen the opening, angle your fingers outwards. To narrow the opening or create a neck, bring your fingers slightly inwards. To create a rounder belly, gently press out from the inside.
Refine the Rim: Once the desired height and form are achieved, carefully refine the rim. Gently pinch and smooth it to create an even, consistent edge.
Smooth the Surface: Use a damp sponge to gently smooth both the inside and outside surfaces of the pot. Remove any finger marks or imperfections. A wooden modelling tool can also be used for specific areas.
Finishing Touches: If desired, use a needle tool to incise simple patterns or add small decorative elements.
Drying: Place the finished pinch pot on a flat surface (e.g., newspaper or a wooden board) to dry slowly and evenly away from direct sunlight or heat. Slow drying reduces the risk of cracking.
Traditional Nigerian Pottery and Craft Industry: Modelling is the core skill behind the vast and diverse traditional pottery industry across Nigeria. Students learn to appreciate the craftsmanship of local potters (e.g., women potters in Ushafa, Abuja; pottery markets in Sokoto, Kano, etc.), who create functional items like water storage pots, cooking vessels, and decorative wares. This knowledge can inspire entrepreneurship in ceramic arts, preserving cultural heritage and contributing to the local economy.
Integration: Students can visit a local pottery workshop or market, or watch documentaries about Nigerian traditional pottery techniques to see the methods and tools in action.
Building and Construction Materials: The understanding of clay properties (e.g., plasticity, shrinkage, firing) is fundamental to industries like brick-making and tile manufacturing. Clay is moulded into bricks (either sun-dried or fired) and tiles, which are essential components of modern and traditional Nigerian architecture. This connects visual art to practical engineering and construction, highlighting how art materials serve functional purposes in the built environment.
Integration: Discuss how mud bricks (adobe) are used in some rural Nigerian homes and how modern fired bricks are produced, explaining the role of clay and its properties in these processes.
Sculpture and Monumental Art: Modelling is the initial stage for many large-scale sculptures, including those cast in bronze or cement. Artists first model their designs in clay, which is then used to create moulds for the final work. Understanding this process helps students appreciate the creation of monumental public sculptures found in Nigerian cities, historical monuments, and commemorative works.
Integration: Show images of famous Nigerian sculptures (e.g., Ben Enwonwu's 'Sango', traditional bronze casts from Benin) and discuss how they might have started as clay models.