Grade 9 Worksheets

Learning Objectives

• Explain conservation of matter and how it applies to chemical reactions and balanced equations
• Use coefficients to match the number of atoms (or representative particles) of each element on both sides of an equation
• Identify and correct errors in unbalanced chemical equations using quantitative reasoning+ Show more

Learning Objectives

• Explain the difference between mean and median for a numeric data set.
• Compute the mean and median from a list of values and interpret what they represent.
• Recognize when median is more reliable than mean in the presence of outliers.

Learning Objectives

• Identify the main message of an oral or written communication.
• Distinguish between key points that support the main message and details that distract from it.
• Use precise wording to keep a message coherent during discussion or a presentation.+ Show more

Learning Objectives

• Use keyword selection to make search queries more precise and relevant.
• Apply common search operators and quotation marks to narrow results.
• Interpret search filters and relevance to improve research quality.

Learning Objectives

• Identify claims made in spoken advertisements.
• Assess whether supporting evidence effectively backs these claims.
• Detect bias and loaded language in spoken messages.+ Show more

Learning Objectives

• Differentiate homogeneous and heterogeneous mixtures using examples and particle-level reasoning
• Explain how physical properties such as particle size, solubility, boiling point, and density can separate mixtures
• Describe separation methods (filtration, distillation, magnetic separation, and decanting) in terms of what property they use

Learning Objectives

• Understand the geometric conditions leading to solar and lunar eclipses.
• Identify the correct sequence of alignment among Sun, Earth, and Moon during eclipses.
• Describe how orbital inclinations affect eclipse frequency and paths of totality.+ Show more

Learning Objectives

• Understand how to connect specific details from a text to character motivations.
• Develop reasoning skills to explain how evidence supports thematic ideas.
• Learn to articulate connections between textual details and broader interpretations.

Learning Objectives

• Explain how reproductive isolation mechanisms contribute to speciation.
• Describe the roles of geographic separation and genetic divergence in lineage formation.
• Identify examples of allopatric and sympatric speciation, including hybrid zones and polyploidy.+ Show more

Learning Objectives

• Identify observable and measurable data that supports scientific claims.
• Differentiate between patterns in data and personal beliefs.
• Understand how empirical evidence helps to validate scientific theories.+ Show more

Learning Objectives

• Explain how net force determines an object's acceleration, including the role of direction
• Use net force ideas to predict motion when multiple forces act on an object
• Describe how mass affects acceleration for a given net force

Learning Objectives

• Understand the process of seafloor spreading and its role in plate tectonics.
• Identify evidence that supports models of seafloor spreading, such as magnetic striping and age progression.
• Explain how oceanic crust is created and recycled at mid-ocean ridges and subduction zones.+ Show more

Learning Objectives

• Compare bacterial and archaeal cell organization with eukaryotic cells, focusing on differences in size, compartmentalization, and genetic arrangement.
• Describe features of prokaryotic cells such as the lack of membrane-bound organelles, circular DNA, and cell wall composition.
• Explain the structural and functional differences between prokaryotes and eukaryotes, including cellular components like ribosomes, plasmids, and membrane systems.+ Show more

Learning Objectives

• Recognize the concept of non-repeating, non-terminating decimal sequences in pi.
• Identify patterns or the lack of patterns in the digits of pi.
• Understand how randomness in pi's digits relates to probability and data analysis.+ Show more

Learning Objectives

• Identify how different genres (argumentative, explanatory, narrative) use purpose to shape structure and style.
• Explain how evidence connects to claims, definitions, comparisons, or reflective details depending on genre.
• Choose the best purpose-matched sentence structure and evidence type for a writing task.+ Show more

Learning Objectives

• Identify counterclaims in persuasive texts
• Differentiate between counterclaims and rebuttals
• Analyze how counterclaims strengthen arguments

Learning Objectives

• Understand the different mechanisms that complicate inheritance beyond simple Mendelian ratios.
• Identify examples of polygenic traits, epistasis, and pleiotropy in genetic inheritance.
• Explain how environmental factors influence phenotypic expression.+ Show more

Learning Objectives

• Identify a frame of reference used to describe motion.
• Interpret velocity direction as measured in a chosen frame.
• Explain how changes in frame affect calculated displacement and velocity but not the physical facts of motion.

Learning Objectives

• Identify how sentence structure affects clarity
• Recognize modifiers and their placement in sentences
• Analyze how syntax influences the focus and meaning+ Show more

Learning Objectives

• Understand the Earth's magnetic field and its influence on navigation and technology.
• Describe regional variation in magnetic declination and its effects on mapping and surveying.
• Explain the concepts of magnetic origin, dip, and regional variation in planetary magnetism.+ Show more

Learning Objectives

• Explain how multiple organ systems work together to maintain stable internal conditions.
• Describe how circulatory, respiratory, digestive, renal, nervous, and endocrine processes support homeostasis.
• Use cause-and-effect reasoning to connect system changes to internal balance.

Learning Objectives

• Identify relevant evidence in discussions.
• Connect new comments to existing ideas effectively.
• Use details, reasons, and examples to support opinions.+ Show more

Learning Objectives

• Define key discipline-specific vocabulary used in academic writing
• Identify correct usages of technical terms within context
• Differentiate between closely related terms to avoid misconceptions+ Show more

Learning Objectives

• Identify tone and voice in different writing passages.
• Understand how stylistic choices affect reader perception.
• Recognize and analyze the use of figurative language and word choice to create tone and voice.

Learning Objectives

• Explain how photon energy depends on frequency using Planck’s relation.
• Relate electromagnetic wave properties (frequency, wavelength) to how signals interact with matter.
• Interpret spectral features (emission and absorption lines) and connect them to atomic energy levels.+ Show more

Learning Objectives

• Understand key concepts related to ELA
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Identify a writer’s claim and evaluate whether evidence supports that claim.
• Analyze reasoning by checking assumptions, cause-effect links, comparisons, and generalizations.
• Explain how an author’s perspective is revealed through word choice, emphasis, omissions, and treatment of opposing views.+ Show more

Learning Objectives

• Explain how ideal mechanical advantage relates force to displacement
• Distinguish ideal mechanical advantage from actual mechanical advantage
• Compare force and speed changes in compound machine systems+ Show more

Learning Objectives

• Develop explanations by using precise definitions and relevant facts.
• Connect ideas logically by using cause-and-effect and evidence-supported interpretations.
• Improve clarity by incorporating illustrative examples and acknowledging multiple perspectives when appropriate.

Learning Objectives

• Explain how audience, purpose, and formality influence word choice (diction) and tone
• Revise sentences to make diction match a specific context and intended meaning
• Identify vague generalities and replace them with precise language and appropriate register+ Show more

Learning Objectives

• Identify credible sources based on relevance and reliability.
• Evaluate information for bias, accuracy, and usefulness.
• Understand how to choose sources that deepen understanding of a topic.

Learning Objectives

• Interpret coefficient ratios in balanced chemical equations to relate reactant and product masses
• Use conservation of mass to reason about how much mass appears in products during real chemical processes
• Translate between symbolic chemical representations and real-world mass accounting scenarios

Learning Objectives

• Define functions and explain their role in modular programs
• Identify how parameters provide input to reusable functions
• Explain how return values send results to calling code+ Show more

Learning Objectives

• Describe the four main tissue types: epithelial, connective, muscle, and nervous tissues.
• Identify examples of specialized epithelia and their functions in absorption and secretion.
• Compare the structural differences among connective tissues from loose to mineralized bone.+ Show more

Learning Objectives

• Explain how evidence synthesis connects research to a clear claim using reasoning.
• Distinguish between paraphrase, quotation, and data and choose each for a specific purpose.
• Write explanatory framing that shows how evidence proves, complicates, or qualifies the controlling idea.+ Show more

Learning Objectives

• Understand key concepts related to ELA
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Make inferences by identifying clues in a text and linking them to evidence through precise paraphrase or quotation.
• Determine how implied relationships (cause-effect, timing, and viewpoint) support a logical conclusion.
• Evaluate whether a claim goes beyond explicit statements and then justify that move using textual support.

Learning Objectives

• Explain how greenhouse gases alter Earth’s energy balance
• Describe how albedo changes can amplify warming
• Compare cooling and warming effects associated with aerosols+ Show more

Learning Objectives

• Identify how voltage and current divide in mixed series-parallel circuits
• Determine equivalent resistance of common series and parallel combinations
• Trace current paths to predict how changing a branch affects the overall circuit

Learning Objectives

• Understand how to compute powers and roots efficiently using mathematical strategies.
• Apply knowledge of exponents to solve real-world problems involving growth and scaling.
• Analyze how powers influence size and quantities in practical contexts like finance and patterns.+ Show more

Learning Objectives

• Identify the major organelles and understand their specific functions in the cell.
• Explain how organelles like mitochondria and chloroplasts contribute to energy production.
• Compare the structures of various organelles and relate them to their roles.+ Show more

Learning Objectives

• Define pure substances and mixtures using composition criteria
• Distinguish elements from compounds using symbols and formulas
• Classify materials as elements, compounds, or mixtures+ Show more

Learning Objectives

• Understand key concepts related to ELA
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Describe key origins of watermelons and how cultivation spread across regions over time.
• Explain cultural meanings of watermelon in summer festivals, traditions, and symbolism.
• Use academic vocabulary related to agriculture, history, and cultural symbolism to interpret historical ideas.+ Show more

Learning Objectives

• Identify how the introductory paragraph presents and supports the central idea.
• Recognize textual clues that introduce the main point of the passage.
• Analyze how the beginning of a text influences your understanding of its central message.

Learning Objectives

• Explain how different groups can interpret the same historical event differently.
• Analyze primary and secondary sources to identify perspective, purpose, and missing evidence.
• Evaluate how whose stories are told and why influences historical understanding.

Learning Objectives

• Define denotation as a word’s literal meaning and connotation as the emotional or cultural associations that meaning can carry.
• Identify connotations in context by distinguishing what a word literally says from what it suggests.
• Explain how author choice of words can reveal attitude or stance toward characters, actions, and events.

Learning Objectives

• Identify simple, compound, and complex sentences in written examples.
• Use dependent clauses to show cause, contrast, or conditions clearly.
• Revise writing by combining sentences and varying openings to improve clarity and rhythm.+ Show more