# Creating a 3D Rotatable Periodic Table Working Model

In this project, we’ll create a 3D working model of the periodic table using cardboard and colored paper.

Each column (group) will be rotatable to demonstrate the periodicity of elements. Here are the steps:

## Materials Needed:

1. Cardboard sheets
2. Colored paper or construction paper
3. Scissors
5. Markers or pens
6. Small rotating platform (e.g., Lazy Susan base, optional but recommended)

## Building the Periodic Table Model:

1. Base Structure:

Step 1: Cut out a large rectangular piece of cardboard to serve as the base of your model. This will provide stability for your components.

2. Creating Columns for Groups:

Step 2: Plan the layout for your periodic table. Determine how many columns (groups) you want and how many elements will be in each.

Step 3: Cut out vertical strips of cardboard to represent the columns/groups. These strips will be arranged side by side to create the table’s structure.

3. Designing the Elements:

Step 4: Cut out smaller rectangles of colored paper to represent individual elements. Write the element’s symbol, atomic number, and atomic mass on each rectangle.

Step 5: Attach these element representations to the columns using glue or adhesive tape. Arrange them in order of increasing atomic number within each column.

Step 6: Attach the rotating platform to the bottom of the base. Ensure it allows for smooth manual rotation.

Step 7: Attach a vertical rod or dowel to the center of each column. This will serve as the axis for rotation.

Step 8: Connect all the rods to the rotating platform. You can do this by inserting them into a common point on the platform or by creating a circular holder for the rods.

5. Labeling and Detailing:

Step 9: Label each column with the group number and name. Use markers or colored paper for clear identification.