Grade 9 Worksheets

Learning Objectives

• Explain why citations and references improve credibility and avoid uncredited use of information.
• Identify what information must be cited (summaries, paraphrases, direct quotes, and data).
• Apply consistent citation practices when integrating evidence into academic writing.

Learning Objectives

• Explain how insulin and glucagon work together to regulate blood glucose during feeding and fasting
• Describe how the liver, muscle, and adipose tissue respond to hormone signals to maintain metabolic homeostasis
• Predict how glucose levels change when insulin or glucagon activity is altered

Learning Objectives

• Explain how allele frequencies change under Hardy-Weinberg equilibrium assumptions and when those assumptions break down
• Describe how genetic drift, bottlenecks, and founder effects can reduce genetic diversity in small or isolated populations
• Evaluate how gene flow and natural selection interact with stochastic processes to shape evolutionary trajectories

Learning Objectives

• Identify claims within a paragraph or passage.
• Recognize counterclaims and opposing views.
• Differentiate between strong and weak supporting reasons.+ Show more

Learning Objectives

• Explain how temperature differences create pressure gradients that drive atmospheric circulation
• Describe how moisture changes (evaporation and condensation) produce clouds and precipitation
• Compare heat transfer processes (radiation, conduction, convection) and their roles in weather systems+ Show more

Learning Objectives

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

Learning Objectives

• Understand the key performance metrics used to evaluate wind turbines.
• Analyze and compare different wind turbine designs based on measurable criteria.
• Assess environmental impacts and life-cycle costs of renewable energy systems.+ Show more

Learning Objectives

• Identify the key parts of a presentation: introduction, main points, transitions, and conclusion.
• Understand how each part supports the overall purpose of a presentation.
• Explain the importance of organized structure when delivering spoken messages.

Learning Objectives

• Explain how energy flows through trophic levels in ecosystems (producers to consumers) and why energy is lost as heat.
• Describe how trophic levels relate to food webs and energy transfer efficiency.
• Compare linear energy chains with interconnected food webs and predict how changes in one species can affect others.

Learning Objectives

• Understand the basic form and derivation of constant-acceleration kinematic equations.
• Apply the equations to analyze vertical free-fall and projectile motion under gravity.
• Learn how to use sign conventions and component-wise treatment in motion problems.+ Show more

Learning Objectives

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

Learning Objectives

• Identify opposite, adjacent, and hypotenuse sides in right triangles
• Select the correct trigonometric ratio for a given angle
• Calculate missing side lengths using sine, cosine, or tangent+ Show more

Learning Objectives

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

Learning Objectives

• Identify the parts of an atom (protons, neutrons, and electrons) and their locations.
• Explain how atomic number and mass number determine an element and its isotope.
• Describe how a simple electron-shell model helps explain basic chemical behavior.

Learning Objectives

• Understand the key matter cycling processes that sustain ecosystems, including microbial decomposition, fixation, mineralization, and sedimentation.
• Identify how human activities like fertilizer runoff impact nutrient fluxes and ecosystem health.
• Explain the concepts of reservoirs, fluxes, and how alterations influence primary productivity and long-term nutrient availability.+ Show more

Learning Objectives

• Identify the different types of energy, specifically kinetic and potential energy.
• Understand how energy is conserved in isolated systems.
• Describe how energy transforms during various physical processes.+ Show more

Learning Objectives

• Understand the environmental and societal impacts of renewable energy sources
• Evaluate different energy-generation options based on sustainability criteria
• Analyze tradeoffs involved in selecting renewable energy technologies

Learning Objectives

• Explain how meiosis and fertilization lead to offspring inheriting allele combinations from parents
• Describe how genetic variation is generated through recombination and heritable mutations
• Connect chromosome behavior during meiosis to patterns of trait inheritance across generations

Learning Objectives

• Understand how to interpret displacement–time graphs
• Identify key features such as slope and interpret their physical meaning
• Recognize curved segments as indications of changing acceleration+ Show more

Learning Objectives

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

Learning Objectives

• Distinguish pure substances from mixtures using fixed composition and macroscopic appearance.
• Classify examples as elements, compounds, homogeneous mixtures, or heterogeneous mixtures.
• Use chemical symbols and formulas to represent elements and compounds accurately.+ Show more

Learning Objectives

• Understand how to interpret scatterplots and identify patterns
• Recognize outliers and trends in graphical data
• Learn the basics of constructing different types of graphs+ Show more

Learning Objectives

• Distinguish systematic error from random error and identify how each affects measurements.
• Recognize common sources of error, including instrument bias, sampling limitations, confounding, and model mis-specification.
• Use evidence such as residual patterns, cross-method comparisons, and sensitivity analyses to detect bias.+ Show more

Learning Objectives

• Explain how membranes regulate transport of nutrients and wastes to maintain internal balance in cells.
• Describe how cellular energy use powers chemical reactions needed for growth and repair.
• Use evidence such as uptake rates and growth patterns to connect cell structure and function.

Learning Objectives

• Understand the mechanisms of plate tectonics, including the types of boundaries and their surface expressions.
• Identify the processes of subduction, continental collision, and how they relate to geological features.
• Explain how mantle convection and slab pull drive plate movements.+ Show more

Learning Objectives

• Identify the key parts involved in thermoregulation
• Understand how body systems work together to maintain temperature
• Explain the functions of skin, vasculature, muscles, and the hypothalamus+ Show more

Learning Objectives

• Explain how scientists and engineers evaluate the benefits, risks, and tradeoffs of technologies over time.
• Identify environmental, health, and resource impacts, including unintended consequences.
• Use criteria such as reliability, emissions, land impact, and risk mitigation to compare solutions.

Learning Objectives

• Explain how wave speed, frequency, and wavelength are related for waves traveling in the same medium.
• Use the relationship v = fλ to predict how changes in frequency affect wavelength (and vice versa).
• Interpret wave descriptions in terms of timing (frequency) and spacing (wavelength).

Learning Objectives

• Explain how Flag Day celebrations promote unity, patriotism, and national pride
• Identify ways communities honor national symbols through ceremonies and educational activities
• Connect civic values to personal actions and social-emotional growth

Learning Objectives

• Explain how passive diffusion, facilitated transport, and active transport move substances across cell membranes using concentration and energy gradients.
• Use quantitative reasoning (concentration differences and relative permeability) to predict net movement and cellular homeostasis outcomes.
• Describe how membrane composition and transport proteins help maintain osmotic balance and electrochemical gradients in different cellular compartments.+ Show more

Learning Objectives

• Understand the key environmental science principles related to ecosystems, biodiversity, and human impact.
• Analyze case studies on pollution, deforestation, and climate change to evaluate their effects.
• Discuss how scientific knowledge informs policies and community actions for environmental preservation.+ Show more

Learning Objectives

• Explain how impulse relates to changes in force and collision time in collision safety design.
• Interpret a force-time idea to describe how longer stopping time can reduce peak force and acceleration.
• Describe how energy dissipation and staged deformation help protect people in high-impact events.+ Show more

Learning Objectives

• Recognize the importance of source attribution in writing
• Identify different techniques of source integration: summary, paraphrase, and quotation
• Understand how to frame evidence with introductory context+ Show more

Learning Objectives

• Explain how protons, neutrons, and electrons form an atom and how they affect atomic identity and behavior.
• Compare isotopes and relate differences in neutron count to changes in atomic mass and stability.
• Use subatomic structure to predict how an atom’s electron arrangement connects to chemical bonding.

Learning Objectives

• Identify correct verb tense usage in sentences
• Understand the difference between past and present tense
• Apply tense consistency to clarify writing+ Show more

Learning Objectives

• Identify similes and metaphors in literary texts
• Interpret the meaning of figurative expressions
• Analyze how figurative language enhances themes and mood in literature

Learning Objectives

• Identify the structural components of neurons and their basic functions.
• Describe how electrical signals propagate along neurons via action potentials.
• Explain synaptic transmission and its role in neural communication.+ Show more

Learning Objectives

• Explain how simple machines transfer forces to change effort, direction, or displacement
• Compare ideal mechanical advantage with real-world outcomes caused by friction and support geometry
• Apply relationships among input force, load, and displacement to common machine examples

Learning Objectives

• Understand the hierarchical levels of biological organization from cells to systems.
• Describe the functions of different tissues, organs, and systems.
• Explain how cell specialization contributes to organ functions.+ Show more

Learning Objectives

• Identify the basic components of DNA and RNA
• Understand the structural differences between DNA and RNA
• Explain how nucleic acid structures relate to their functions in heredity and cellular processes

Learning Objectives

• Explain how hydrophilic and hydrophobic parts of phospholipids form a bilayer
• Describe how membrane structure supports selective permeability
• Identify how the bilayer acts as a barrier to some substances and allows others to pass

Learning Objectives

• Explain how the nephron forms urine through glomerular filtration, selective reabsorption, secretion, and urine concentration
• Describe how hydrostatic and oncotic pressures influence the glomerular filtration rate
• Use countercurrent multiplication and ADH to predict how urine concentration changes+ Show more

Learning Objectives

• Explain how alleles form genotypes and how genotypes determine observable traits (phenotypes).
• Use dominant and recessive relationships to predict which traits appear in offspring.
• Interpret heredity evidence across generations using genotype–phenotype reasoning.

Learning Objectives

• Identify series and parallel components within a mixed (combined) circuit
• Calculate equivalent resistance and use it to find total current and voltage relationships
• Trace how current and voltage distribute across parallel branches in combined circuits+ Show more

Learning Objectives

• Understand the structure of the plasma membrane.
• Explain how molecules move across the membrane through passive and active transport.
• Identify different proteins involved in membrane transport and their functions.

Learning Objectives

• Identify different types of epithelial tissues
• Understand the functions of epithelial tissues in the body
• Recognize example structures of epithelial tissue in organs+ Show more

Learning Objectives

• Revise drafts by improving word choice, reducing repetition, and strengthening clarity
• Identify and correct common editing issues such as unclear references, inconsistent tense, run-ons, and fragments
• Improve sentence variety and readability through purposeful restructuring+ Show more

Learning Objectives

• Explain how tone and authorial stance affect a text’s theme and purpose
• Identify stance by analyzing diction, imagery, and sentence attitude
• Connect shifts in tone to changes in conflict, evidence, or emphasis