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Greek alphabet reference

All twenty-four letters, upper and lower case, with the name, how it is written in Latin letters, and what it usually stands for.

It runs entirely in this browser tab: the seed makes a sheet repeatable, nothing is uploaded, and nothing about a child is stored anywhere.

Settings

Letters: All twenty-four, or the ones a formula actually uses. Choices: All of them, The ones in formulas.
With the uses: What the letter usually stands for — usually, not always.
With the codes: The codepoint and the name a formula editor knows it by.

Can I print the same sheet again?: Yes, and that is what the seed is for. Type a word or a number into it and the sheet is the same every time; share the link and everybody gets that sheet. A fresh one shows the seed it used, so a sheet that went well can be pinned after the fact.
Where are the answers?: On the sheet, unless you switch them off — and the result says which way round it is. Turn them off before handing it out; turn them back on for marking.
Is anything about my class stored?: No. There is no account, no progress and no score, and no list you paste leaves this tab. The sheet is drawn in the browser and printed from it.
How do I print it?: Copy or save the result and print that. What comes out is what is on the screen: the sheets are laid out to be printed rather than to be filled in on a phone.

Periodic table reference
All 118 elements as a table to read or print: symbol, number, mass and kind, and the masses that are conventions say so.

Molar mass calculator
What a formula weighs, element by element, with the share each contributes and the moles in a weight you name.

Chemical equation balancer
The smallest whole-number coefficients, worked out exactly, and a plain refusal when an equation has none or has many.

SI prefix reference
Every prefix from quecto to quetta, with its factor written out, and a value converted from one to another.