F2 Math

F2 Math is an educational brand that helps people understand practical mathematics by building formulas themselves in Excel. Its downloadable workbooks teach concepts used in data science, finance, CFA study, quantitative analysis, and AI/ machine learning, using a shared dataset and step-by-step formula tracing rather than treating calculations as black boxes. Pressing F2 reveals how a result is built across spreadsheet cells; ESC returns to the previous view, and users can change highlighted input cells and see charts respond.

The curriculum is organized into two products. D1: Foundation covers mean, variance, the normal distribution, and z-scores, with examples involving averages, volatility, outliers, and standardization. D2: Regression extends the learning to covariance, correlation, simple linear regression, R², and an introductory bridge to machine learning concepts such as loss functions and gradient descent. The site describes the workbooks as Excel .xlsx files with live formulas and emphasizes hands-on learning. D1 is listed at $15 and D2 at $19, with instant download and ongoing access.