For Greek I like this: https://www.covingtoninnovations.com/pens/GreekChartLarge.jpg https://www.covingtoninnovations.com/pens/GreekChartLarge.jp... There’s an

For Greek I like this: https://www.covingtoninnovations.com/pens/GreekChartLarge.jpg https://www.covingtoninnovations.com/pens/GreekChartLarge.jp... There’s an old joke about “mathematical maturity” meaning being able to write a lowercase zeta, but I took enough classes from professors that would confuse xi and zeta that it probably doesn’t matter that much.