Is my child ready for Trigonometry?

A free, no-signup way to find out in about 15 minutes — then a clear 4-week plan to close any Algebra II or Geometry gaps before they turn into a hard course.

Why trigonometry struggles usually start earlier

Most students don't struggle with Trigonometry because trig itself is hard. They struggle because something earlier never got solid — function notation, transforming graphs, working with radicals, or the right-triangle geometry that trig is literally built on. Trigonometry sits at the top of two earlier courses at once: Algebra II for functions and graphs, and Geometry for right triangles and similar triangles. One unfinished topic from either quietly becomes "my child is bad at trig" a semester later.

From the outside it's hard to tell which gap is the culprit. Grades say "math" without saying where the problem lives. Worksheets feel random. Tutoring is expensive and slow to diagnose. The first useful move isn't more practice — it's finding the specific gap.

The skills a readiness check should test

"Ready for trigonometry" isn't one skill; it's a short list of foundations spanning Algebra II and Geometry. A good readiness check looks at each of these directly:

• Function notation, domain, and range — reading f(x), evaluating functions, and stating where they live, the language all of trig is written in.
• Function transformations — shifting, stretching, and reflecting graphs, the exact moves used later for amplitude and period of sine and cosine.
• Radical expressions and rational exponents — simplifying square roots and fractional powers, which show up constantly in exact trig values.
• Triangle angle relationships and similar triangles — angle sums and similar triangles with scale factor, the reasoning that defines the trig ratios.
• The Pythagorean theorem and right triangles — finding a missing side, the backbone of right-triangle trig and the unit circle.
• Right-triangle trigonometry basics — sine, cosine, and tangent as side ratios, the bridge straight into the full Trigonometry course.

A gap in any one of these is normal and fixable. The point of a placement check is to name it precisely so the next few weeks of practice actually target it. On ClearMath, the Algebra II placement check tests the function-side foundations and the Geometry placement check tests the triangle-side foundations.

How the ClearMath placement checks work

1. Take the right placement check. To confirm prerequisite readiness, run the Algebra II and Geometry placement checks — each is a short check (about 15 minutes for the full version, or a quick ~1-minute read). They're not graded tests — they're routing tools that find where to start. The Trigonometry placement check covers the trig course itself once your child is in it.
2. See exactly which topics need work. A clear, parent-readable gap report shows what's solid and what isn't, with no jargon and a recommended starting course.
3. Follow a 4-week plan. Four lessons sequenced in curriculum order, targeting the actual gaps. Print it, download it, or copy it — the plan is yours.
4. Practice, review, and build. Each lesson includes practice and a checkpoint. Missed problems flow into a Review queue so nothing slips. An optional AI tutor offers hints when your child gets stuck — never the final answer on a quiz or checkpoint.

What you get — and what we don't claim

You get a specific gap report (topics named one by one, strong areas, weak areas, a starting-course recommendation), a 4-week plan you can keep, and free access to the full lesson library. Progress saves locally in your browser, and you can export it as a JSON backup file at any time.

What we won't promise: a placement check is a snapshot, not a guarantee of a grade. It tells you where to start, honestly. There's no signup wall and nothing to buy to see your results.

If a check shows gaps: where to go next

Frequently asked questions

How do I know if my child is ready for Trigonometry?

They're ready when the Algebra II and Geometry skills trig leans on are solid: function notation, domain and range, function transformations, radical expressions and rational exponents, and from Geometry the Pythagorean theorem, right triangles, similar triangles, and right-triangle trigonometry basics. The fastest honest check is a placement diagnostic that tests those skills directly rather than relying on a single grade. The free ClearMath Algebra II and Geometry checks do this in about 15 minutes each.

What math should a child know before Trigonometry?

Comfort with Algebra II foundations — function notation, domain and range, graphing and transforming functions, radical expressions, and rational exponents — and with the Geometry trig sits on: triangle angle relationships, similar triangles and scale factor, the Pythagorean theorem, right triangles, and right-triangle trigonometry basics. A gap in any one tends to surface later as trouble with trig.

Are the placement checks really free?

Yes. The checks and the 4-week plan are free — no account, no email, and no credit card to take one and see your results.

What happens after a check?

You get a parent-readable gap report naming the specific topics that are solid and the ones that need work, plus a recommended starting course and a 4-week plan you can print, download, or copy.