Pre-test reading · 4 exams · highlight + synced notes
Study guide
Read the full story of each Praxis domain — format, blueprint, careers you can grow into, and day-in-the-life work. Then study the passages, highlight what matters, and add side notes before you take a practice test.
Domain · ALG
Number & Quantity and Algebra
Make structure visible — then compute.
Who should take it: Every Praxis 5165 candidate. This is ~30% of the exam and the language of secondary algebra courses you will teach.
Exam format & facts
- Roughly 20 of ~66 items (~30% of the test).
- Includes number systems, algebra, and modeling.
- Expect teaching-task wrappers on some items.
- Graphing calculator available on-screen.
What the blueprint is really testing
ETS wants evidence you can operate in the real/complex numbers, rewrite expressions strategically, and solve equations/inequalities/systems while monitoring domain.
How the exam feels
Fast items if fluent; brutal if you rush into algebra without checking equivalence and restrictions.
Score strategy
- Can you explain why extraneous roots appear after squaring?
- Can you reduce i^n quickly?
- Can you convert between vertex and standard form?
Why this domain matters in the classroom
Praxis domains map directly to secondary courses you will teach.
Algebra I / II teacher
You live in linear/quadratic structure, functions precursors, and student error patterns daily.
Intervention / support math
Number sense and equation solving misconceptions dominate RTI conversations.
Day-in-the-life tasks
- Warm-up: rewrite expressions two ways.
- Main: solve a system or quadratic with justification.
- Exit: diagnose a sample student solution.
Before you take a practice test
- Can you explain why extraneous roots appear after squaring?
- Can you reduce i^n quickly?
- Can you convert between vertex and standard form?