WGU RXT2: Precalculus and Calculus

Where RXT2 Fits in Your Science Education Master's

RXT2: Precalculus and Calculus is a two-competency-unit mathematics content course in WGU's School of Education. The institutional catalog lists it under the common course number MATH 5350 and places it inside the Master of Arts in Science Education programs — first term in the Secondary Physics track, second term in the Secondary Chemistry track. If you are reading this, you are most likely an already-licensed teacher adding a secondary science endorsement, and RXT2 is the mathematical groundwork sitting underneath the physics or chemistry content courses that follow.

Direct answer: Pass RXT2 by working problems by hand every single day rather than watching lectures about them. Rebuild your function, algebra, and trigonometry fluency first, then layer limits, derivatives, and integrals on top of it. Use the course pre-assessment as a diagnostic and spend your remaining hours only on the topics that came back weak.

The scope matters here. Two CUs is a small block in a graduate program, but the catalog description spans territory traditional universities usually split across two courses: a precalculus half and a calculus half. WGU compresses that by asking for conceptual command rather than the full computational grind — the catalog frames the calculus topics as conceptual knowledge, so you need to understand what a derivative is and what physical question it answers, not to survive pages of exotic integration technique.

It also matters who takes it. You already teach, and you have explained slope, rate, and area before. RXT2 asks you to hold those ideas firmly enough to teach chemical kinetics or projectile motion honestly — sharpening tools you already own, not learning a new language. You can see how it sits beside the rest of your program on the School of Education guide hub.

What the Catalog Says RXT2 Covers

WGU's published course description is short and worth reading literally: the course teaches precalculus and calculus and then applies them to examples drawn from both mathematics and science. That last clause is the tell — expect the science context, not bare symbol pushing.

The catalog names its topics in two groups. Here they are, with what each one tends to ask of you in practice:

• Principles of trigonometry — the unit circle, radian measure, the six functions and their graphs, and identities used to rewrite expressions.
• Mathematical modeling — choosing a function family that fits a described situation and interpreting its parameters in context.
• Exponential and logarithmic functions — growth and decay behavior, inverse relationships, and log rules used to solve equations.
• Polynomial and rational functions — end behavior, zeros, asymptotes, and domain restrictions.
• Limits — evaluating them numerically, graphically, and algebraically, including the indeterminate cases.
• Continuity — recognizing where a function breaks and why that matters.
• Differentiability — the derivative as instantaneous rate of change, the standard rules, and interpretation of results.
• Integration — the integral as accumulation and area, and the link back to differentiation.

Those bullets expand the catalog's own list; they are not a blueprint of the exam. Your Course of Study page is the authoritative statement of what your version assesses and what calculator or scratch-work rules apply, so check it early. For contrast, the catalog does label some math courses as portfolio work — AOA2 Number Sense and Functions is described there as a performance-based assessment of a student's portfolio. RXT2 carries no such label and is generally taken as a proctored objective assessment, which is how this guide treats it.

How Hard RXT2 Feels, and How Much Time to Budget

Honest assessment: RXT2 is a moderate course whose difficulty depends almost entirely on how recently you have done mathematics with a pencil. Because the catalog frames the calculus half conceptually, the derivatives-and-integrals portion often lands lighter than people fear. The precalculus half — especially trigonometric identities and log manipulation — is where old rust actually shows, and it is rarely the half anyone plans for.

Do not let the two-CU label set your expectations. CUs describe credit weight, not the number of hours a particular person needs. A teacher who taught algebra II last year may clear RXT2 in a couple of focused weeks. A teacher who last touched trigonometry in college can reasonably plan on four to six weeks of steady daily work, and that is a normal, respectable pace rather than a warning sign.

The most reliable predictor is your own pre-assessment. Take it early and honestly. Close to passing means you are polishing; well below means you are rebuilding — and rebuilding takes calendar time that no amount of cramming compresses.

A Four-Week Plan Built Around Working Problems

Mathematics rewards retrieval practice more than almost any other subject, because you cannot recognize a solution path you have never generated yourself. Structure your weeks accordingly.

1. Week 1 — diagnose and rebuild functions. Take the pre-assessment. Then spend the week on polynomial, rational, exponential, and logarithmic functions: sketch each by hand, name its domain, and say aloud what its shape means. Close the book and reproduce the graphs from memory before checking.
2. Week 2 — trigonometry, actively. Rebuild the unit circle from scratch on blank paper daily until it takes under two minutes. Derive the Pythagorean identities rather than memorizing them; derived facts survive exam stress far better than memorized ones.
3. Week 3 — limits, continuity, derivatives. For every rule you learn, immediately write one science example: concentration change per second, velocity from a position function. Space your review — revisit week 1 and week 2 material for fifteen minutes at the start of each session rather than leaving it behind.
4. Week 4 — integration and mixed practice. Shift to timed, mixed problem sets that jump between topics without warning. Interleaving like this feels harder than blocked practice and is exactly why it works. Retake the pre-assessment only after this week, so it measures readiness rather than recent memory.

Use the course materials WGU provides first — they are aligned to your assessment in a way outside material is not — and reach for your course instructor early. Instructors in math content courses are usually generous with worked walkthroughs, and a thirty-minute call about limits will outperform three hours of solo confusion.

Logistics are worth handling before test day rather than during it. WGU's published requirements for proctored objective assessments include a personal computer (not a business or school machine) on a personal network (not a business or public one), a fully supported operating system — Windows 10 or higher, or macOS 13 Ventura or higher — plus required downloads of Chrome and the Guardian Browser, a single monitor, and an external webcam, since a laptop's built-in camera does not meet the specification. Headphones are not permitted during a proctored objective assessment, and Chrome OS, Linux, and virtual machines are prohibited. Run the WGU system check in advance so a technical surprise never becomes a math surprise.

Where Science Teachers Lose Ground in RXT2

• Skipping the precalculus half. Calculus is the headline, so people rush there. Then a derivative problem hides a log rule or a trig identity, and the wall is not calculus at all.
• Watching instead of writing. Video lectures produce a warm feeling of understanding that disappears the moment a blank page appears. Pause every example and solve it yourself before the presenter does.
• Leaning on the calculator for structure. A calculator gives you a number; the reasoning behind the number is the part being assessed. Practice enough by hand that you know what answer to expect before computing.
• Ignoring interpretation. Because RXT2 applies math to science examples, "the derivative equals 4.2" is half an answer. Practice finishing the sentence with units and meaning.
• Treating a passing pre-assessment as permission to stop. Sit the real thing while the material is warm, or plan a genuine refresh.
• Studying in long, rare blocks. Five ninety-minute sessions beat one seven-hour Saturday, every time.

RXT2 Readiness Checklist

• Can you sketch polynomial, rational, exponential, and logarithmic graphs from memory and state each one's domain and end behavior?
• Can you reproduce the unit circle, in radians, on blank paper in under two minutes?
• Can you simplify a trigonometric expression using identities without looking at a reference sheet?
• Can you solve an exponential equation with logarithms and explain each step to a student?
• Can you evaluate a limit three ways — from a table, from a graph, and algebraically — and explain when each is appropriate?
• Can you say what makes a function continuous and give an example of each type of discontinuity?
• Can you differentiate a composite function correctly and then state what the result means in a physical situation?
• Can you explain integration as accumulation and connect it back to differentiation in plain language?
• Have you confirmed the assessment format and any calculator rules on your Course of Study page?
• Have you completed the technical setup — supported OS, personal network, Chrome and Guardian Browser, external webcam, no headphones — before test day?

RXT2 FAQ

How many competency units is RXT2 worth?

Two competency units. WGU's institutional catalog lists RXT2 under common course number MATH 5350 at 2 CUs in both the Secondary Physics and Secondary Chemistry tracks of the Master of Arts in Science Education, and WGU's own course-of-study document for the course is titled with the same 2 CU value.

Is RXT2 an objective assessment or a performance assessment?

RXT2 is a mathematics content course and is generally taken as a proctored objective assessment rather than a submitted written task. WGU's catalog does not state the format course by course, so treat your Course of Study page as the authority for your term — course versions are periodically updated.

Do I need to have taken calculus before?

The course is written to provide instruction in both precalculus and calculus, so it does not assume you arrive fluent in calculus. It does assume comfort with algebra and functions. If those feel distant, budget review time up front rather than discovering the gap mid-course.

How long does RXT2 usually take?

It varies more than most courses, because the starting point varies so much. Teachers with recent math teaching experience often move through in a few weeks; those returning to mathematics after years away can reasonably plan four to six weeks of daily practice. Your pre-assessment result is a better estimator than anyone else's timeline.

What should I study first?

Functions and trigonometry. Most calculus trouble in a course like this traces back to a precalculus skill that was never fully rebuilt, so front-loading that half pays off twice.

Which other courses pair well with RXT2 in my program?

In the Secondary Chemistry track, RXT2 sits in the same catalog sequence as courses like C625 Biochemistry. If you want a deeper treatment of the calculus side for your own confidence, the C958 Calculus I guide covers similar ground in more computational detail. You can browse everything on our full WGU study guide index, and official course details are always published in the WGU institutional catalog.