Browse the reference library
Find shapes, formula cards, toolkits and labs, all in one searchable library.
The reference library is a collection of interactive pages beside the calculator. It holds 2D shapes, 3D solids, algebra formula cards, toolkits, labs and exam-style formula sheets.
- Tap the Reference library button (the book icon) in the top bar.
- Type in the search box ("Search shapes and formulas"), or use the category chips: All, Labs, Toolkits, 2D shapes, 3D solids and Algebra.
- Tap a card to open it. Use "Back to library" at the top to return.
- On a shape, change the values with the sliders or number boxes. 3D solids can be dragged to rotate, and you can pinch or scroll to zoom. Side lengths, areas and volumes update as you move.
- Right inside the library there is an Examples button that opens the graph examples. See the graph examples guide.
Tips
- Formula cards also show the keys to press on each calculator family. See the formula Calculate guide.
- Labs marked PRO are free to look at, and need Pro to change.
- Exam practice can hide the whole library.
Related guides
- Try a formula with live numbers and send it to the calculatorOpen a formula card, change the values, and tap Calculate to put the expression on your calculator.
- Use the subject toolkitsThe toolkits are small interactive tools: a triangle solver, unit circle, conics explorer, distribution visualizer, chemistry tools and personal finance.
- Use the exam-style formula sheetsOpen a one-page formula sheet for algebra, geometry, precalculus, calculus, statistics or physics, and print it.