Leo Antunes

Connexion is a collection of the most useful and interesting spreadsheet-related articles from the web.

The twenty principles for good spreadsheet practice aims to reduce the amount of time wasted and the number of errors.

Overconfidence is one of the main causes of spreadsheet errors. Being informed about overconfidence leads to more accurate spreadsheets.

This early spreadsheet, a Babylonian clay tablet c.1800 BC, contains several errors. How many errors do your spreadsheets have?

Solver Max provides a collection of optimization model examples in Excel (using the Solver and OpenSolver add-ins) and Python.

"Oh My God" my formulas are not working! This article covers most of the reasons for Excel formulas not working. And how to fix them.

Your spreadsheets may be disasters in the making. Strive for spreadsheets that are validated, reliable, and auditable.

Spreadsheet errors are reduced by using good design. Our students do three assignments to acquire good spreadsheet design skills.