Masterpiece Mosaics Lesson Guide Teacher Guide Grade 3 • Integrated Math & Art
Masterpiece Mosaics
Geometric Quadrilaterals, Area on Grids, and Abstract Mosaic Design
Duration: 60–75 min
Focus: CCSS 3.G.A.1 & 3.MD.C.5
Art Standard: VA:Cr1.1.3a
Content Objectives (Math & Art)
Identify & Classify: Categorize quadrilaterals (rectangles, squares, rhombuses, trapezoids) by attributes (sides, right angles, parallel pairs).
Calculate Area: Measure the area of shapes on a square-unit grid by multiplying length × width or tiling unit squares.
Artistic Synthesis: Compose an abstract geometric mosaic inspired by Alma Thomas and Piet Mondrian.
Language Objectives (WIDA / ELD)
Speaking: Use sentence stems to justify why a polygon is a quadrilateral with a peer partner (Think-Pair-Share).
Listening: Follow multimodal instructions pairing spoken academic vocabulary with physical gestures and visual anchor charts.
Writing: Record shape attributes and express area calculation using the formula frame: Area = __ × __ = __ sq units .
Key Academic Vocabulary & Cognate Bridges
Sheltered ELL Support
Quadrilateral (Cuadrilátero)
A closed 2D polygon with exactly 4 straight sides and 4 vertices.
Attribute (Atributo)
A characteristic or feature of a shape (e.g., number of equal sides, right angles).
Parallel Lines (Líneas paralelas)
Lines that run in the exact same direction and never touch or cross.
Right Angle (Ángulo recto)
A square corner that measures exactly 90 degrees (looks like an "L").
Area (Área)
The total flat surface covered inside a 2D shape, measured in square units.
Mosaic (Mosaico)
Artwork made by fitting small geometric colored pieces together.
Tiered Language Scaffolds (WIDA Proficiency Bands)
Levels 1–2: Emerging
Point and match color-coded cards. Provide pre-cut paper quadrilaterals with marked sides. Gesture right angles using thumb and forefinger "L" shape.
"This is a ___. It has 4 sides."
Levels 3–4: Expanding
Use bilingual sentence stems with word bank cards. Students calculate area by tracing grid borders and writing multiplication expressions (\(l \times w\)).
"This shape is a ___ because it has ___ and ___."
Levels 5–6: Bridging
Encourage comparative analysis between rhombuses and squares. Challenge students to calculate total artwork surface area and write an artist's statement.
"While both share ___, a rectangle differs because ___."
Masterpiece Mosaics • Math & Visual Arts Integration Page 1 of 2
Step-by-Step Instructional Plan & Facilitation Steps
10 min
Hook & Visual Thinking Strategy (VTS) Realia & Artwork
Display Mondrian's Composition with Red, Blue, and Yellow and Alma Thomas's Iris, Tulips, Jonquils, and Crocuses . Ask: "What shapes do your eyes notice first?" Prompt students to turn to their partner and point out quadrilaterals. Model TPR (Total Physical Response) hand signs: 4 fingers for 4 sides.
15 min
Math Concept Modeling: Attributes & Grid Area Direct Scaffolding
Project a 10×10 unit grid. Demonstrate how to build a 4×3 rectangle. Guide students to count unit squares, then demonstrate multiplication (\(4 \times 3 = 12\text{ sq units}\)). Introduce the Quadrilateral Hierarchy: all rectangles are quadrilaterals, but not all quadrilaterals are rectangles. Highlight right angles with a corner index-card check.
25 min
Art Studio Workshop: Designing Masterpiece Mosaics Student Production
Distribute the Masterpiece Mosaics Student Worksheet . Students outline at least 4 distinct quadrilaterals (1 square, 1 non-square rectangle, 1 rhombus or trapezoid, 1 composite shape). They color using bold primary/secondary palettes, label dimensions, and calculate the area of each shape in their artist data table.
10 min
Museum Walk & Academic Dialogue Oral Discourse
Students display their works. Partners rotate with sentence frame cards: "I noticed your rectangle has an area of ___ square units. What equation did you use?" The creator replies: "I multiplied ___ by ___ because it has ___ rows and ___ columns."
5 min
Formative Debrief & Exit Ticket Quick Check
Administer the 1-page Masterpiece Mosaics Exit Ticket to assess shape classification, attribute justification, and grid area computation independently.
Common Misconceptions
• Confusing Area and Perimeter: Students count border edges instead of square units inside. Have them physically shade each box.
• Orientation Confusion: A tilted square is called a "diamond." Remind students to test the angles (all 4 are right angles).
Art Integration Tips
• Piet Mondrian: Used thick black lines and primary colors (red, blue, yellow) with white/gray balance.
• Alma Thomas: Used rhythmic patterns of colorful brushstrokes placed closely to form larger geometry.
Success Criteria Checklist
1. Geometry: Accurately identifies at least 3 distinct quadrilaterals with correct attribute descriptions.
2. Measurement: Accurately calculates area using multiplication (\(l \times w\)) or square counting with correct units.
3. Language & Art: Expresses reasoning using targeted sentence frames and produces a deliberate color composition.
Masterpiece Mosaics • Math & Visual Arts Integration Page 2 of 2
Masterpiece Mosaics Slides Grade 3 Math + Art CCSS 3.G.A.1 & 3.MD.C.5
Studio Math Workshop
Masterpiece
Mosaics
Discover how artists use quadrilaterals , attributes , and area to create powerful visual art!
Area = 4
4 Sides
Goal: Plan, measure, and speak about your own geometric masterpiece!
Artist Inspiration Visual Thinking Strategy
Math in Modern Art
Piet Mondrian
Grids
Mondrian used rectangles and squares with thick black lines and bold primary colors (red, blue, yellow).
Notice: Every corner makes a square right angle (90°)!
Alma Thomas
Patterns
Alma Thomas painted rhythmic mosaics of colorful tiles and repeating geometric patches to capture light and joy.
Notice: Small shapes repeat to fill a larger area!
Turn & Talk: "What shapes and colors do you notice first?"
Geometry Rules CCSS 3.G.A.1
The Quadrilateral Family
A quadrilateral is any 2D polygon with 4 straight sides and 4 vertices (corners) .
Rectangle
4 sides
4 right angles
Opposite sides equal
Square
4 equal sides
4 right angles
A special rectangle!
Rhombus
4 equal sides
Opposite sides parallel
Angles can vary
Trapezoid
4 sides
1 pair parallel
Non-parallel sides
Spanish Cognate: Cuadrilátero = 4 lados (4 sides) Make an "L" with your fingers to test right angles!
Measurement & Math CCSS 3.MD.C.5 & 3.MD.C.7
How to Find the Area
Area is the total number of square units needed to cover a flat shape.
Length = 5 units
Width = 3
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Method 1: Count the Squares
Masterpiece Mosaics Student Worksheet Math & Visual Arts Studio
Name: Date:
Masterpiece Mosaics: Shape & Area Warm-Up
Explore quadrilaterals and practice finding area on a grid before creating your art.
Part 1 & 2
Artist Word Bank (Banco de Palabras)
Quadrilateral
Cuadrilátero (4 sides)
Right Angle
Ángulo Recto (Square corner)
Parallel Sides
Lados Paralelos (Never touch)
Area
Área (\(l \times w\))
1
Quadrilateral Detective
Look at each shape. Write its specific name and check its attributes.
Shape A
4 right angles
Shape Name:
4 straight sides 4 square right angles
Shape B
equal sides
Shape Name:
4 equal sides 2 pairs of parallel sides
Shape C
Shape Name:
Exactly 1 pair parallel sides Quadrilateral family
2
Grid Area Warm-Up
Find the area of each shape. Show your multiplication equation.
4 units by 2 units
Figure 1: Blue Rectangle
Equation (\(l \times w\)):
Total Area:
square units
3 units by 3 units
Figure 2: Yellow Square
Equation (\(l \times w\)):
Total Area:
square units
Masterpiece Mosaics Studio Worksheet Page 1 of 2
Part 3: Masterpiece Mosaic Studio Blueprint
Design your artwork on the grid below. Include at least 4 distinct quadrilaterals.
Student Name:
Tip: Label your shapes with letters (A, B, C, D) and color them in bold patterns.
Part 4: Artist Geometry Data Table
Record your math data
Shape Quadrilateral Name Length × Width Equation Total Area Shape A
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| Shape C |
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| Shape D |
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Masterpiece Mosaics Exit Ticket Geometry & Art Quick Check
Name: Date:
Masterpiece Mosaics Exit Ticket
Show what you know about quadrilaterals, area, and geometric art!
Exit Ticket
1
Shape Attributes
CCSS 3.G.A.1
Maria drew a shape in her mosaic. It has 4 straight sides , opposite sides that are equal and parallel , and 4 right angles . Which shape did Maria draw?
A Triangle
B Rectangle
C Pentagon
D Hexagon
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Calculating Grid Area
CCSS 3.MD.C.5
Look at the shaded tile below. Calculate its total area using multiplication.
6 units
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Multiplication Equation:
Area:
square units (unidades cuadradas)
3
Math Reasoning & Discussion
ELL Language Frame
Carlos says: "All squares are rectangles, but not all rectangles are squares." Is Carlos correct? Why?
Helpful Words: • 4 right angles • 4 equal sides • parallel • quadrilateral
Carlos is (correct / incorrect).
A square is a rectangle because it has .
However, a rectangle does not have to have .
How do you feel about today's lesson?
🌟
I've got it!
I can explain shapes & area.
👍
Almost there!
I need a little more practice.
🤝
Help needed!
I have some questions.
Masterpiece Mosaics • Exit Ticket Total Points: ___ / 10
