TI-Nspire – Notes

The Notes application allows you to combine text, formulas, calculations, and chemical notation into a smooth problem-solving flow.

  • By default, you type regular text.
  • Mathematical content is entered in a Math Box, which you add by pressing CTRL + M.
    • If you exit the box using the arrow key, only the formula remains visible.
    • If you press ENTER inside the box, the calculation is executed.
    • If you press CTRL + ENTER inside the box, an approximate value is calculated.
  • Chemical formulas are entered in a Chem Box, which you add by pressing CTRL + E.
    • The Chem Box automatically adds subscripts after letters.
    • The Chem Box tries to automatically detect capital letters.
    • The Chem Box automatically converts the equals sign (=) to a reaction arrow.

On Mac, use CMD instead of CTRL

Dynamic Notes

In addition to taking notes, a nice extra feature is interactivity. When you edit expressions or adjust a slider, the calculation results update automatically.

Exploring limits with a slider

In the Notes app, results update automatically when values change. You can store values using := or add a slider from the menu.

Taylor approximation and dynamic values

In the Notes app, results update automatically when values change. You can store values using := or add a slider from the menu.

Binomial expansion with slider

In the Notes app, results update automatically when values change. You can store values using := or add a slider from the menu.

Dynamic sum of arithmetic sequence

There are several ways to calculate the sum of numbers from 1 to n: using a list, a sigma expression, or a known formula. With the slider you can dynamically explore the results.