Model polynomials with algebra tiles

  1. Introduction to Algebra Tiles:
    • Algebra tiles are physical or virtual manipulatives that represent variables and constants in algebraic expressions.
    • Tiles typically come in different colors and shapes, with each color representing a different algebraic element.
  2. Basic Tile Representations:
    • Small squares or rectangles often represent positive unit values, while their negative counterparts are represented by tiles of the same shape but a different color.
    • Larger tiles, such as rectangles or squares, represent variables raised to higher powers.
  3. Building Monomials:
    • Monomials are algebraic expressions with a single term.
    • Use tiles to represent constants (single-color tiles) and variables (tiles with multiple colors) to build monomials.
  4. Adding and Subtracting Polynomials:
    • To add or subtract polynomials, arrange tiles of like terms in columns.
    • Combine tiles vertically to simplify the expression.
  5. Multiplying Polynomials:
    • Use the area model to represent the product of two binomials.
    • Arrange tiles to form rectangles, where the dimensions represent the factors, and the area represents the product.
  6. Factoring Polynomials:
    • Represent factoring as the process of breaking down a rectangle into smaller rectangles.
    • Identify common factors and use tiles to visually demonstrate factoring.
  7. Understanding Zero Pairs:
    • A zero pair occurs when a positive tile and a negative tile cancel each other out, resulting in zero.
    • Emphasize the concept of balancing equations using zero pairs.
  8. Visualizing Algebraic Operations:
    • Encourage students to manipulate the tiles to visually understand algebraic operations, fostering a deeper conceptual understanding.
  9. Solving Equations:
    • Represent equations with tiles to demonstrate the equality concept.
    • Use tiles to model the steps involved in solving equations, such as isolating the variable.
  10. Interactive Learning:
    • Utilize both physical and virtual algebra tiles for interactive and engaging learning experiences.
    • Online platforms may provide virtual manipulatives for practicing algebraic concepts.

Learn with an example

Combine like terms. For example, write 3 instead of 1 + 1 + 1.

Count the tiles:

This set of algebra tiles represents the expression –4 x2 + 4x + 1.

Combine like terms. For example, write 3 instead of 1 + 1 + 1.

Count the tiles:

This set of algebra tiles represents the expression –6x2 + 9x.

Combine like terms. For example, write 3 instead of 1 + 1 + 1.

Count the tiles:

This set of algebra tiles represents the expression  –3x2 + 5x + 10.