Which administrative tool is ideal for displaying numerical data in classrooms?

Using a spreadsheet as an administrative tool for displaying numerical data in classrooms is highly effective due to its versatile features that support various data visualization techniques. Spreadsheets allow educators to input large amounts of numerical data, perform calculations, and create dynamic charts and graphs that can illustrate trends or comparisons. This is particularly useful in subjects such as mathematics and science, where data analysis is crucial. The ability to manipulate data in real-time means that educators can demonstrate concepts clearly and interactively, aiding students' understanding and engagement.

In contrast, while a chalkboard can present information, it lacks the capability to handle complex numerical data efficiently, and the static nature of a textbook limits the interactive exploration of data. Posterboards can be used for displaying information but do not allow for the level of detail and interaction that spreadsheets provide, especially for handling large datasets or making calculations. Therefore, the spreadsheet stands out as the most suitable tool for effectively showcasing numerical information in an educational setting.