Which calculator should I start with?

The paycheck calculator, unless the lesson is a loan, a mortgage, or a deal model. Each widget page has its own snippet.

Is this financial advice?

No. It is educational material. The widget applies a formula to the inputs typed into it.

Embed in WordPress

Embed a calculator in WordPress

In the block editor, add a Custom HTML block and paste the snippet. The iframe is the widget. The paragraph under it is the followable credit.

Pick a calculator on the widgets hub, or start with the paycheck widget. Classroom notes: teachers. Term: net pay.

Steps

Copy the snippet from the widget page.
In WordPress, add a Custom HTML block.
Paste the whole snippet, including the caption paragraph, then publish.

Paycheck snippet to paste

<iframe
  src="https://www.financelearn.org/embed/paycheck-calculator"
  width="100%" height="480" style="border:0"
  title="Paycheck calculator and FICA split"
></iframe>
<p style="font:14px/1.5 system-ui,sans-serif;margin:.5rem 0 0">
  <a href="https://www.financelearn.org/calculators/paycheck-calculator?utm_source=embed&utm_medium=referral&utm_campaign=embed-calculators">Paycheck calculator and FICA split</a>
  by <a href="https://www.financelearn.org/?utm_source=embed&utm_medium=referral&utm_campaign=embed-calculators">FinanceLearn</a>
</p>

Other hosts: Google Sites, Canvas, Schoology, Moodle, Notion.

This page is educational material, not financial advice. The figures come from the formula shown and assume the inputs you enter hold for the whole term. Your own rate, fees, taxes and timing will differ, so treat the output as arithmetic to check a decision against, not as a recommendation.