Creating a geometrical shapes working model using cardboard and colored paper is a fantastic way to showcase various shapes for a math project or exhibition.

Here’s a simple and engaging DIY project:

**Materials Needed:**

- Cardboard
- Colored paper
- Ruler
- Pencil
- Scissors
- Glue or tape
- Markers
- Wooden dowels or straws
- Small weights (e.g., beads, paper clips)

**Shapes to Include:**

- Square
- Rectangle
- Circle
- Triangle (equilateral, isosceles, scalene)
- Pentagon
- Hexagon
- Octagon

**Steps to Create the Geometrical Shapes Working Model:**

**Step 1: Prepare the Base:**

- Cut a large piece of cardboard to serve as the base for your working model.

**Step 2: Draw and Cut Out Shapes:**

- Draw and cut out templates for each shape from colored paper. Use different colors for visual appeal.
- Label each template with the name of the shape.

**Step 3: Attach Shapes to Dowels:**

- Glue or tape each shape template onto wooden dowels or straws.
- For stability, attach small weights (e.g., beads or paper clips) to the bottom of each shape.

**Step 4: Attach Dowels to the Base:**

- Attach the dowels or straws with the shape templates to the cardboard base. Place them in a way that allows for easy rotation.

**Step 5: Optional – Label the Shapes:**

- Create labels or index cards with information about each shape, including the number of sides, angles, and any interesting facts.

**Step 6: Display and Explain:**

- Set up your working model at the exhibition table.
- Demonstrate each shape by rotating the corresponding dowel or straw.

**Step 7: Optional – 3D Shapes:**

- To expand the project, create 3D shapes (cube, pyramid, cylinder, etc.) using additional templates and dowels.

**Explanation:**

- During the exhibition, explain the characteristics of each shape.
- Encourage visitors to interact with the model, rotating the shapes and observing their properties.

This working model provides a hands-on and visual representation of various geometrical shapes, making it an interactive and educational display for a math project or exhibition. It allows students and visitors to physically engage with the model, enhancing their understanding of geometry concepts.