Grade 9 Worksheets

Learning Objectives

• Identify Newton’s third-law force pairs by specifying the two interacting objects and the forces acting on each object.
• Explain why third-law forces are equal in magnitude and opposite in direction but can produce different accelerations.
• Apply third-law ideas to propulsion, gravity interactions, and contact forces in collisions.+ Show more

Learning Objectives

• Explain the importance of balancing chemical equations.
• Identify coefficients and symbols in chemical equations.
• Describe how balancing reflects atomic conservation during reactions.+ Show more

Learning Objectives

• Understand the role of sex chromosomes in inheritance.
• Explain mechanisms of sex-linked trait expression and their implications in regional fauna and livestock.
• Distinguish between different sex determination systems and their genetic consequences.+ Show more

Learning Objectives

• Define Mendelian inheritance and identify its key features
• Describe dominant and recessive traits in genetics
• Recognize various inheritance patterns including incomplete dominance and codominance+ Show more

Learning Objectives

• Understand how measured mass reflects the conservation of atoms during chemical reactions.
• Describe how gaseous products can affect apparent mass changes in open systems.
• Explain the importance of accounting for all phases and system boundaries in mass measurements.+ Show more

Learning Objectives

• Explain how physical landforms (mountains, valleys, deserts, and rivers) are distributed across regions
• Describe how physical features influence human settlement, agriculture, and transportation
• Analyze how climate patterns relate to physical features and water availability+ Show more

Learning Objectives

• Understand how net force affects the motion of objects.
• Learn to resolve forces into components and calculate net force.
• Identify the conditions when forces are balanced or unbalanced.+ Show more

Learning Objectives

• Identify key drivers of migration, including economic opportunity, conflict, and environmental change
• Explain how migration flows create both continuity and change across time and between immigration and internal movements
• Analyze consequences of migration and urbanization, such as metropolitan sprawl, rural decline, and housing pressure+ Show more

Learning Objectives

• Explain key reasons people become refugees and how migration happens across borders
• Use vocabulary related to migration, safety, human rights, and cultural adaptation
• Demonstrate understanding by reading a narrative passage and answering comprehension questions+ Show more

Learning Objectives

• Explain how Earth’s axial tilt changes the angle of incoming sunlight and affects solar heating.
• Describe how Earth’s rotation and orbit determine day length and seasonal timing.
• Use latitude and the concept of daylight duration to predict relative changes in temperature patterns.

Learning Objectives

• Understand common electrical faults such as open circuits, short circuits, and component degradation.
• Learn how to interpret symptom descriptions, circuit topology, and measurement data to diagnose faults.
• Apply logical reasoning and inference to determine probable failure modes based on observed signals and readings.+ Show more

Learning Objectives

• Define electric current, voltage, and resistance and describe what each quantity represents in a circuit
• Use SI units, symbols, and typical magnitudes to interpret and compare values in real electrical systems
• Apply relationships between voltage, current, and resistance to reason about energy transfer and component choice

Learning Objectives

• Identify key regulatory terms involved in initiating transcription.
• Explain how transcription factors and repressor proteins influence RNA production.
• Describe how promoters, enhancers, and chromatin accessibility work together to control gene expression.

Learning Objectives

• Understand and identify key physical properties of minerals
• Develop observational skills to examine minerals accurately
• Apply knowledge of mineral properties to real-world examples+ Show more

Learning Objectives

• Explain the mechanisms driving surface and deep ocean currents.
• Identify features such as gyres, upwelling zones, and boundary currents and their effects.
• Describe how changes in ocean circulation can influence climate and weather patterns.+ Show more

Learning Objectives

• Understand the concept of the greenhouse effect
• Identify natural and human sources of greenhouse gases
• Recognize how greenhouse gases trap outgoing radiation+ Show more

Learning Objectives

• Explain the meaning of mean, median, and mode and when each is most appropriate
• Analyze how skew, outliers, and multimodal distributions affect different measures of central tendency
• Justify a chosen summary statistic using assumptions about the data-generating process

Learning Objectives

• Understand the concept of lunar phases and their causes.
• Identify and name the different lunar phases.
• Explain the relative positions of the Sun, Moon, and Earth during each phase.+ Show more

Learning Objectives

• Explain how the kidney maintains fluid volume, osmolarity, and electrolyte balance.
• Describe how filtration, selective reabsorption, secretion, and concentration work together across nephron segments.
• Summarize the roles of antidiuretic hormone (ADH) and aldosterone in fluid balance.

Learning Objectives

• Explain what happened on June 19, 1865, and why it is remembered in African American history.
• Identify how emancipation in Texas unfolded more slowly than the Emancipation Proclamation suggested.
• Describe how Juneteenth celebrations reflect both historical memory and ongoing civil rights struggles.+ Show more

Learning Objectives

• Understand what scientific models are and their purpose
• Identify how models help explain phenomena and predict outcomes
• Learn how models are refined based on new evidence+ Show more

Learning Objectives

• Explain how appropriate scales, calibrated instruments, and consistent units affect measurement accuracy.
• Use significant figures and uncertainty ranges to report measurements with justified precision.
• Convert between units and record data consistently to support fair comparisons.

Learning Objectives

• Understand the basic concepts of heredity, genes, and alleles
• Describe how traits are inherited from parents
• Identify the difference between dominant and recessive traits+ Show more

Learning Objectives

• Understand the differences between ionic lattices, covalent networks, and molecular solids.
• Identify properties such as melting point, electrical conductivity, hardness, and solubility related to lattice organization.
• Explain how electrical forces influence the structure and properties of different solid types.+ Show more

Learning Objectives

• Explain the causes of lunar phases based on the positions of the Sun, Earth, and Moon.
• Describe the sequence of lunar phases and how they relate to the Moon's orbit.
• Predict lunar phases using the geometry of the Sun-Earth-Moon system.+ Show more

Learning Objectives

• Understand the basic idea that matter is made of tiny particles in constant motion
• Recognize how particle arrangements differ in solids, liquids, and gases
• Explain how particle movements relate to observable phenomena like diffusion and pressure

Learning Objectives

• Define digital identity and reputation and explain how online presence is formed by posts, comments, and search results.
• Analyze how audience and context affect how an online post can be interpreted.
• Apply strategies to protect online reputation through responsible posting choices.

Learning Objectives

• Identify how topic sentences and supporting details work together to create paragraph purpose.
• Use transitions and logical ordering to improve cohesion within and across paragraphs.
• Revise paragraph structure to reduce repetition and strengthen the central idea.

Learning Objectives

• Identify different types of physical changes such as melting, freezing, evaporation, condensation, and dissolving.
• Distinguish between reversible and irreversible physical transformations.
• Understand how energy transfer relates to phase changes.+ Show more

Learning Objectives

• Explain the conservation of mass principle in closed systems during chemical reactions
• Use mass accounting to predict how total mass of reactants compares to total mass of products
• Distinguish true mass conservation in sealed conditions from apparent mass changes caused by gas exchange

Learning Objectives

• Identify the hierarchy from cells through tissues, organs, and organ systems
• Explain how specialized cells contribute to organ-level function
• Describe the structural role of extracellular matrix in tissues+ Show more

Learning Objectives

• Understand the organization of different tissue types and their cellular features.
• Identify the functions related to epithelial, connective, muscle, and nervous tissues.
• Link microscopic features of tissues to their roles in organ systems.+ Show more

Learning Objectives

• Understand the concepts of mean, median, and mode and their appropriate contexts of use.
• Compare and contrast how different measures of central tendency respond to skewed data, outliers, and multimodality.
• Explore how the choice of a central tendency relates to assumptions about data distribution and underlying processes.+ Show more

Learning Objectives

• Understand how basic coding constructs can model linear relationships.
• Apply programming logic to solve algebraic problems.
• Interpret data visualizations generated through computational models.+ Show more

Learning Objectives

• Describe how electrons are distributed among energy levels and orbitals in an atom.
• Explain the significance of valence electrons in chemical reactivity and bonding.
• Understand the shell filling order and its relation to periodic trends.+ Show more

Learning Objectives

• Explain the three core statements of cell theory and describe how new cells arise from existing cells.
• Compare unicellular and multicellular organization and connect cell specialization to organism function.
• Differentiate prokaryotic and eukaryotic cells by identifying key structural features and their effects on cellular processes.

Learning Objectives

• Identify major organelles involved in cell maintenance
• Understand the functions of organelles in energy transfer, synthesis, and detoxification
• Explain how organelles cooperate within the cell+ Show more

Learning Objectives

• Revise sentences to correct grammar and usage errors, including subject-verb agreement and tense consistency.
• Apply punctuation rules to clarify relationships between ideas and clauses.
• Choose correct word forms to maintain precise meaning and reduce distraction.

Learning Objectives

• Explain how Newton’s three laws relate forces to changes in motion
• Predict the motion of an object using net force, inertia, and action-reaction pairs
• Analyze real-world scenarios (sports, vehicles, collisions) using the correct law

Learning Objectives

• Explain how privacy settings control who can view, contact, and access personal information on digital platforms.
• Describe how app permissions and consent affect how data is collected, stored, and shared.
• Make informed decisions about what information to keep private and how to manage permissions.

Learning Objectives

• Understand different types of molecular arrangements in solids
• Identify properties associated with ionic, covalent, and molecular lattices
• Relate particle organization to material properties like melting point, conductivity, and hardness+ Show more

Learning Objectives

• Identify a controlling idea and explain how reasons support a claim
• Select evidence that directly connects to a stated reason
• Use transitions and paragraph structure to improve coherence+ Show more

Learning Objectives

• Understand the concept of inertia and objects that follow or resist change in motion.
• Identify examples of Newton's First Law in everyday life.
• Describe how objects tend to stay at rest or in uniform motion unless acted upon by an external force.

Learning Objectives

• Understand how the arrangement of particles affects the properties of different types of solids.
• Identify the differences between ionic lattices, covalent networks, and molecular solids based on their structure and properties.
• Analyze how electrical forces influence melting point, conductivity, hardness, and solubility in various materials.+ Show more

Learning Objectives

• Understand different sampling methods and their applications
• Calculate biases and interpret data from various samples
• Analyze the impact of sampling variability on data analysis+ Show more

Learning Objectives

• Analyze the societal uses and benefits of common chemicals in household and industrial applications.
• Assess the potential risks and environmental impacts associated with chemical exposure and disposal.
• Investigate strategies for safe handling, regulation, and alternatives to hazardous chemicals.+ Show more

Learning Objectives

• Use correct subject-verb agreement in common sentence structures
• Maintain consistent and appropriate verb tense and mood
• Ensure pronouns clearly refer to the nouns they replace+ Show more

Learning Objectives

• Explain how social justice relates to equality, education access, and human dignity.
• Analyze short narratives inspired by Nelson Mandela’s advocacy to identify causes and impacts of injustice.
• Apply inclusive strategies that communities and students can use to promote fairness.