Algebra 1 Resources

A special thanks to the PA LEADS districts, and particularly the School District of Haverford Township, for initiating the Algebra 1 Resource page and for contributing to the contents. Keystone Exams are end-of-course assessments that were developed to measure a student’s level of proficiency in core subjects, such as Algebra I, Biology and Literature. This page contains Algebra 1 materials that align with the Keystone Exam, providing instructional content for educators and subject-specific activities that students can use to prepare for the assessment.

Keystone Exams are built using a module format, wherein the Assessment Anchors and Eligible Content are organized into two thematic modules. Select a Module below to begin exploring the resources.

  • - Lesson/Unit Plan
  • - Instructional Content
  • - Educational Resources
  • - Assessment
  • - Videos
  • - Web-Based Content
  • - PA Educator Created Content
  • - Safe Schools Resource
Eligible Content Educator Resources Student Resources Sample Assessments
A1.1.1.1.1 Compare and/or order any real numbers (rational and irrational may be mixed).
A1.1.1.1.2

Simplify square roots (e.g., √24 = 2√6).

A1.1.1.2.1 Find the Greatest Common Factor (GCF) and/or the Least Common Multiple (LCM) for sets of monomials.
A1.1.1.3.1 Simplify/evaluate expressions involving properties/laws of exponents, roots and/or absolute value to solve problems (exponents should be integers from -10 to 10).
A1.1.1.4.1 Use estimation to solve problems.
A1.1.1.5.1 Add, subtract and/or multiply polynomial expressions (express answers in simplest form – nothing larger than a binomial multiplied by a trinomial).
A1.1.1 Operations with Real Numbers and Expressions
A1.1.1.5.2

Factor algebraic expressions, including difference of squares and trinomials (trinomials limited to the form ax2+bx+c where a is equal to 1 after factoring out all monomial factors).

A1.1.1 Operations with Real Numbers and Expressions
A1.1.1.5.3 Simplify/reduce a rational algebraic expression.
A1.1.1 Operations with Real Numbers and Expressions
A1.1.2.1.1 Write, solve and/or apply a linear equation (including problem situations).
A1.1.2.1.2 Use and/or identify an algebraic property to justify any step in an equation solving process (linear equations only).
A1.1.2.1.3 Interpret solutions to problems in the context of the problem situation (linear equations only).
A1.1.2.2.1 Write and/or solve a system of linear equations (including problem situations) using graphing, substitution and/or elimination (limit systems to 2 linear equations).
A1.1.2.2.2 Interpret solutions to problems in the context of the problem situation (systems of 2 linear equations only).
A1.1.3.1.1 Write or solve compound inequalities and/or graph their solution sets on a number line (may include absolute value inequalities).
A1.1.3.1.2 Identify or graph the solution set to a linear inequality on a number line.
A1.1.3 Linear Inequalities
A1.1.3.1.3 Interpret solutions to problems in the context of the problem situation (limit to linear inequalities).
A1.1.3.2.1 Write and/or solve a system of linear inequalities using graphing (limit systems to 2 linear inequalities).
A1.1.3.2.2 Interpret solutions to problems in the context of the problem situation (systems of 2 linear inequalities only).
Standards Aligned System
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