20 best working maths models for Class 9

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The best working math models for Class 9 include those demonstrating Pythagorean theorem, circle properties, lines and angles, and polygons.

Models using physical representations like squares and triangles for geometry theorems are a great option, while a circular model can illustrate circle properties or a 3D model can showcase polygon

1. Pythagoras Theorem Working Model

  • Using right-angled triangle and LED strips
  • Show a2+b2=c2a^2 + b^2 = c^2a2+b2=c2 with square blocks.

2. Coordinate Geometry Plotter

  • LED lights showing points (x, y)
  • Move sliders to change coordinates.

3. Linear Equation Balance Model

  • Use weighing scale model to show
    ax+b=cax + b = cax+b=c → balancing both sides.

4. Trigonometric Ratios Model

  • Rotating triangle to show
    sin, cos, tan change with angle.

5. Corresponding Angles LED Model

  • Touch metal nails → LEDs glow for angle pairs
  • Shows transversal + parallel lines.

6. Algebraic Identity Model

  • (a+b)2=a2+b2+2ab(a+b)^2 = a^2 + b^2 + 2ab(a+b)2=a2+b2+2ab
  • Use colored squares to demonstrate.

7. Distance Formula Working Model

  • Two points on a graph connected with a slider
  • Automatically calculates (x2−x1)2+(y2−y1)2\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}(x2​−x1​)2+(y2​−y1​)2​.

8. 3D Shapes Model (TLM)

  • Use sticks and clay to make cube, prism, pyramid
  • Show edges, faces, and vertices.

9. Probability Spinner Model

  • Spin wheel showing probability outcomes
  • Use LED to show event possibilities.

10. Pie Chart with LED Lights

  • Each sector lights up when pressed
  • Explains data handling clearly.

11. Linear Graph Model

  • Move slider → line shifts
  • Shows slope (m) and intercept (c).

12. Area of Circle Demonstration

  • Cut circle into sectors → rearrange into rectangle
  • Shows formula A=πr2A = \pi r^2A=πr2.

13. Surface Area & Volume Kit

  • Openable 3D shapes
  • Students can see nets converting to solids.

14. Symmetry Mirror Model

  • Vertical mirror showing reflective symmetry
  • Demonstrate multiple symmetrical shapes.

15. Number System LED Model

  • Binary, decimal, octal numbers
  • Buttons convert numbers and show LEDs.

16. Fraction Visualizer

  • Rotating discs showing 1/2, 1/3, 1/4
  • Easy model for understanding fractions.

17. Geoboard Coordinate Model

  • Rubber bands on nails draw shapes
  • Demonstrate area and coordinates.

18. Parabola & Curve Maker

  • Strings fixed to pins
  • Shows parabolic curve formation (locus).

19. Arithmetic Progression Machine

  • Push button → next AP term appears
  • Demonstrate formula a+(n−1)da + (n-1)da+(n−1)d.

20. Mensuration Formula Board

  • Flip-cards + opening models
  • Shows 3D shapes and how formulas are applied.

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