1. Calendar like the Periodic Table
Use an Analogy
Calendar like the Periodic Table

2. Calendar Days of a calendar are like the periods of the Periodic Table
The days are arranged in rows like the Periodic Table

3. The periods of the Periodic Table are arranged in rows
The periods of the Periodic Table are arranged in rows. The elements in a row have the same number of energy levels.

4. The columns of a calendar are similar to groups on the periodic table

5. The groups on the periodic table have similar properties related to their structure.