Compass Resources

Understanding the ACT Compass

### Compass Essential Skills: Pre-Algebra

#### Integers

Properties of Real Numbers
What properties do real numbers share?

Real Number Types [CC]
Pick a number ... any number. Do you know its type?

Number Types
What are all of the different types of numbers?

What do all addition problems have in common?

How can you add single-digit, double-digit, and triple-digit numbers?

Subtract Integers
How can you find the difference between 2 integers?

Absolute Value and Signed Integers
What do -4 and +4 have in common?

Absolute Value [CC]
What do -5 and +5 have in common?

How can you add negative and positive numbers?

Signed Number Addition and Subtraction [CC]
How can you add and subtract signed numbers?

Signed Number Arithmetic
How can you add, subtract, multiply, and divide with signed numbers?

Subtraction Application Problems
How do you know when a word problem is asking you to subtract?

Subtraction Application Problems [CC]
When do you actually use subtraction?

#### Fractions

Understanding Fractions
Can you explain what a fraction is?

Simplify Fractions
How can you reduce a fraction to its simplest form?

Simplify Fractions
How do you know when a fraction can be simplified?

Equivalent Fractions
How can 2/3 and 8/12 be equivalent?

Equivalent Fractions
How can you identify equivalent fractions?

Compare Fractions [CC]
5/7 vs 6/7. Which value is greater?

Improper Fractions and Mixed Numbers
How can you convert improper fractions to mixed numbers and vice versa?

Convert Mixed Numbers to Improper Fractions
How can you convert a mixed number into an improper fraction?

Convert Improper Fractions to Mixed Numbers
How can you convert an improper fraction into a mixed number?

Why do you need a common denominator to add fractions?

Subtract Fractions
Why do you need a common denominator to subtract fractions?

Multiply Fractions (Video)
How can you multiply fractions?

Divide Fractions [CC]
Why do we use reciprocals to divide fractions?

How can you add a fraction to another fraction, a whole number, or a mixed number?

Subtract Fractions and Mixed Numbers
What are 2 strategies that you can use to subtract fractions and mixed numbers?

Subtract Fractions and Mixed Numbers
Review how to subtract a fraction from another fraction, a whole number, or a mixed number.

Multiply Fractions and Mixed Numbers
How can you multiply fractions by other fractions, whole numbers, and mixed numbers?

Divide Fractions and Mixed Numbers

#### Decimals

Round Decimals
How does rounding decimals differ from rounding whole numbers?

Rounding Decimals
How can you round decimals to a given place value?

Write Decimals
How can you write decimals out in word form?

Writing Decimals
How can you use your knowledge of place value to write decimals?

Compare Decimals
How can you compare decimals?

Comparing Decimals
How can you use place value to compare decimals?

Does the decimal point change the process?

Subtraction with Decimals [CC]
Does the decimal point change the process?

How can you add and subtract decimals?

Multiply Decimals [CC]
Why are zeroes are so important in these problems?

Division with Decimals [CC]
How can you use a decimal point to help you divide decimals?

Multiplication and Division with Decimals
How can you multiply and divide decimals?

Decimals and Fractions
How can you change decimals into fractions and fractions into decimals?

Convert Fractions, Decimals, and Percentages
How can you convert decimals to fractions and percentages.

#### Exponents

Rules of Exponents
How can you work with exponents?

Scientific Notation
How can you write numbers in scientific notation?

Scientific Notation [CC]
How can you work with unimaginably large and small numbers?

Powers and Exponents
How can you use a power's base and exponent to rewrite the value as a product of factors?

Rule of Zero [CC]
What is the value of a number with a zero as an exponent?

Power Rule of Exponents
How can you raise one power to another power?

Negative and Rational Exponents
How can you work with negative and rational exponents?

Quotient of Powers Property
How can you divide and simplify exponential expressions?

#### Square Roots

Simplify Square Roots
How can you simplify expressions that contain square roots?

Simplify Square Roots
How can you search for perfect squares, the factors that allow us to simplify square roots?

How can you add and subtract square roots?

How can you add and subtract square roots?

Multiply Square Roots
How can you multiply expressions with square roots?

Multiply Square Roots [CC]
How can you multiply expressions with square roots?

What is a root, and how can you work with it?

The Imaginary Unit i
What is an imaginary number?

#### Percentages

Understanding Percent
What is a percentage?

Percent as a Proportion
How can you solve problems by writing a percentage as a proportion?

Percent as Proportion [CC]
How can you solve problems by writing a percentage as a proportion?

Percent Equations
How can you find the percent of a number and understand the different parts of the basic percent equation?

Percent Equations [CC]
How can you find the percent of a number and understand the different parts of the basic percent equation?

Percent Change
How can you use percent to understand how much a quantity has increased or decreased?

Percent Change [CC]
How can you use percent to understand how much a quantity has increased or decreased?

Convert Fractions, Decimals, and Percents
How can you convert percentages to decimals or fractions?

#### Ratios, Rates, and Proportions

True Proportion
How can you identify true proportions?

Ratios
What is a ratio?

Ratios
How can you work with ratios?

Rates
How can you use rates to set up expressions?

Rates [CC]
How can you use rates to set up expressions?

Scale
How can you read and solve problems containing different scales?

Scale Factor
How can you find a scale factor that shows how one quantity relates to another?

Solve Proportions
How can you read proportions and simplify the expressions?

Proportion
How can you read proportions and simplify expressions?

#### Averages

Mean, Median, Mode, Range
Why would you need to find the mean, median, mode, and range of a group of values?

Mean, Median, and Mode [CC]
How can you analyze a data set in 3 different ways?

Weighted Average
How can you find the average of quantities that have different values?

Weighted Average [CC]
What happens when each quantity in a set has a different value?

### Compass Essential Skills: Algebra

#### Expressions

Write Expressions and Equations
Do you want to learn how to read word problems and convert them to algebraic expressions?

Combine Like Terms
Do you want to review how to read algebraic expressions with like terms and simplify the expressions?

Distributive Property
What is the distributive property?

Monomials
What are the fundamental characteristics of monomials?

Multiply Monomials
How do you go about multiplying terms that contain both constants and variables?

Multiply Monomials [CC]
How do you go about multiplying terms that contain both constants and variables?

Algebraic Expressions
What is an algebraic expression and how can it be simplified?

Evaluate Algebraic Expressions
How do you evaluate algebraic expressions?

Evaluate Algebraic Expressions [CC]
How do you evaluate algebraic expressions?

Simplify Algebraic Expressions
What steps must be taken when simplifying algebraic expressions?

Simplify Algebraic Expressions [CC]
What steps must be taken when simplifying algebraic expressions?

Simplify Complex Fractions
How do you simplify complex fractions?

Rational Expressions: Find the LCD of Rational Expressions
Working with rational expressions. How can you find the lowest common denominator?

Simplify Rational Expressions with Polynomials
Interested in revisiting the basic steps for simplifying rational expressions?

Absolute Value [CC]
What do -5 and +5 have in common?

Translating Phrases to Mathematical Expressions
Math is a language! How can you translate phrases into mathematical expressions?

#### Equations

Simplify Rational Expressions [CC]
How are rational expressions simplified?

Graphing Relations, Domain, and Range
How are the aspects of functions represented graphically?

Domain and Range, Part 1 [CC]
What are the important concepts of domain and range?

Domain and Range, Part 2 [CC]
What are the important concepts of domain and range?

Direct and Inverse Variation
What are the basics of direct and inverse variations?

Direct and Inverse Variation [CC]
What are the basics of direct and inverse variations?

Exponential Equations
Can you identify the fundamentals of exponential equations?

Exponential Equations
Can you identify the fundamentals of exponential equations?

Solve Equations by Using Proportion
How do you solve equations using proportions?

Solve Systems of Linear Equations by Graphing
How are graphs used to solve systems of linear equations?

Coordinate System [CC]
What is the coordinate system and how are equations represented on graphs?

Solve Linear Equations with Rational Numbers
How are rational numbers used to solve linear equations?

Linear Equations
What are the basic principles of linear equations?

Linear Equations
What are the basic principles of linear equations?

Divide Polynomials
What are the steps involved in polynomial division?

Divide Rational Expressions
How is division of rational expressions carried out?

Solve Linear Equations with Variables on Both Sides of the Equation
How can you find the value of variables when they appear on both sides of an equation?

Solve Equations with a Variable on One Side of the Equation
How can you find the value of a variable when it appears on one side of an equation?

Absolute Value
What do -5 and +5 have in common?

Linear Inequalities
How are linear inequalities interpreted?

Literal Equations
What are the steps involved in solving equations?

Slope-Intercept Form
How are equations written in slope-intercept form?

What role do radicals play within equations?

Solve Linear Systems
What are the most common methods used when solving linear systems?

#### Polynomials

Simplify Rational Expressions
How are rational expressions simplified?

Expand Polynomials
What are the steps in polynomial expansion?

Factoring a Monomial from a Polynomial
Is it possible to factor a polynomial to get a monomial?

Factor Polynomials
What are the key steps to take when factoring polynomials?

Factor Polynomials (2 Strategies)
What methods can be used to factor polynomials?

Factor and Solve Polynomial Equations
How can polynomials be factored and solved?

What are the fundamental aspects of polynomial manipulation?

What are the fundamental aspects of polynomial manipulation?

Polynomial Division
How are polynomials divided?

Multiply Binomials
What are the steps in binomial multiplication?

Vocabulary in Context
A dictionary is not your only source of definitions -- How can you use reasoning to figure out what unfamiliar words mean as you read?

Finding the Main Idea
What strategies can you use to figure out the main idea of a passage?

Drawing Conclusions
Are you sure of that? Draw conclusions and be able to support them.

Author's Purpose
How can you figure out the main purpose of a passage?

Literal Questions
How can you identify these types of questions and make sure that you're responding correctly?

Making Inferences
What makes an inference different from a wild guess?

### Compass Essential Skills: Writing

The Brainfuse Writing Lab Essential Grammar Guide
A Quick Reference for Grammar, Usage, and Mechanics