Grade 8 Worksheets

Learning Objectives

• Explain what a unit rate is and how it relates to ratios.
• Complete and interpret ratio tables by finding missing values.
• Convert between equivalent rates using consistent scaling to get values for a denominator of 1.+ Show more

Learning Objectives

• Understand the mechanisms leading to energy dissipation in mechanical systems.
• Identify factors such as friction, hysteresis, and sound emission that cause efficiency loss.
• Learn measurement approaches for quantifying energy dissipation.+ Show more

Learning Objectives

• Explain how passive transport (diffusion, osmosis, and facilitated diffusion) differs from active transport across cell membranes.
• Describe how concentration gradients and membrane properties affect the rate of net movement.
• Distinguish between membrane transport mechanisms and bulk transport processes (endocytosis and exocytosis).+ Show more

Learning Objectives

• Describe how temperature, concentration, surface area, and catalysts affect reaction rates using collision ideas.
• Use the concepts of collision frequency and activation energy to explain differences in observable time scales of chemical changes.
• Interpret and explain evidence from classroom-relevant examples such as rusting and effervescence.

Learning Objectives

• Explain how the hydrologic cycle moves water through a watershed
• Describe groundwater–surface exchange and its effect on contaminant transport
• Identify how watershed connectivity influences water quality+ Show more

Learning Objectives

• Define mechanical efficiency and explain the concept of energy dissipation.
• Identify common mechanisms causing efficiency losses such as friction, sound, and hysteresis.
• Describe measurement approaches for quantifying energy losses in machinery.+ Show more

Learning Objectives

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

Learning Objectives

• Prioritize revision tasks by checking ideas, organization, evidence, and accuracy before polishing surface details.
• Strengthen writing by adding elaboration that explains relationships among ideas (not just extra facts).
• Ensure paragraph-level organization aligns with the controlling idea to prevent drift.

Learning Objectives

• Understand the components and dynamics of large regional water systems.
• Analyze the challenges related to governance, contamination, and resource management.
• Recognize the impact of climate change and invasive species on water balance.+ Show more

Learning Objectives

• Understand the difference between independent, dependent, and controlled variables.
• Identify variables in various experimental contexts.
• Learn the importance of controlling variables to ensure fair tests.+ Show more

Learning Objectives

• Explain the difference between renewable and nonrenewable resources and why renewability matters for sustainability
• Describe how human extraction and use of resources can affect ecosystems and environmental health
• Evaluate whether resource use is sustainable by considering demand, regeneration capacity, and environmental indicators

Learning Objectives

• Identify renewable resources and understand their characteristics.
• Differentiate between renewable and nonrenewable resources.
• Recognize the environmental impacts of resource extraction and use.+ Show more

Learning Objectives

• Identify and classify independent, dependent, and controlled variables in experiments.
• Understand the importance of fair testing and control selection in scientific investigations.
• Analyze how variables affect experiment results and reproducibility.+ Show more

Learning Objectives

• Distinguish renewable and nonrenewable resources and explain why their availability matters for sustainability
• Describe common environmental impacts of resource extraction and use
• Apply sustainability principles by balancing demand with regeneration capacity and reducing harmful byproducts+ Show more

Learning Objectives

• Identify the components of the hydrologic cycle in large basins
• Understand the connectivity between groundwater and surface water
• Recognize the challenges of governing transboundary water systems+ Show more

Learning Objectives

• Differentiate between renewable and nonrenewable resources in terms of replenishment time scales.
• Explain how human extraction and consumption of resources can create environmental impacts.
• Describe how long-term sustainability balances human demand with regeneration capacity and mitigation of harmful byproducts.+ Show more

Learning Objectives

• Identify observable evidence of physical and chemical changes
• Describe differences between physical and chemical changes
• Recognize examples of chemical and physical transformations

Learning Objectives

• Classify independent, dependent, and controlled variables in a scientific investigation.
• Identify appropriate controls and explain why fair tests require keeping other variables constant.
• Describe procedural constraints and the role of calibration, safety, and ethical data recording in reproducible investigations.

Learning Objectives

• Explain how water moves through a watershed, including surface runoff and infiltration to groundwater
• Describe how connectivity in a watershed links land activities to lake/river water quality
• Evaluate how governance and monitoring help manage trade-offs among ecosystem health, water supply, and economic uses

Learning Objectives

• Identify evidence used to support claims within a text
• Analyze how evidence strengthens arguments
• Practice evaluating and citing textual evidence effectively+ Show more

Learning Objectives

• Explain how natural selection can change a population’s trait distribution over generations
• Identify the roles of heritability and variation in adaptation
• Describe how changing environmental pressures can shift selection and lead to evolutionary change+ Show more

Learning Objectives

• Understand the differences between independent, dependent, and controlled variables in scientific investigations.
• Learn how to establish fair tests by selecting appropriate controls and documenting procedural constraints.
• Identify examples of variables and controls in real-world experiments involving friction, reaction rates, and environmental factors.+ Show more

Learning Objectives

• Explain how atmospheric pressure affects the boiling point of liquids.
• Describe how barometers measure atmospheric pressure and how pressure gradients drive wind.
• Use the idea of pressure changes with altitude (in kPa) to predict outcomes for everyday systems.

Learning Objectives

• Identify different types of interactions among organisms in an ecosystem.
• Understand how predation, competition, disease, and mutualism affect populations.
• Recognize how changes in interactions can alter community structure and ecosystem stability.+ Show more

Learning Objectives

• Explain how atmospheric pressure influences weather and physical systems.
• Describe how barometers operate based on pressure changes.
• Understand the relationship between altitude and pressure variation.+ Show more

Learning Objectives

• Explain how the hydrologic cycle connects to water availability in a regional basin
• Analyze watershed connectivity, groundwater–surface exchange, and contaminant or nutrient sources
• Evaluate how governance and monitoring strategies influence water-quality outcomes

Learning Objectives

• Use respectful language during disagreements by choosing calm, kind words.
• Practice active listening skills and explain how they help reduce conflict.
• Apply assertive communication to state needs and set boundaries without hostility.+ Show more

Learning Objectives

• Identify and classify independent, dependent, and controlled variables in experiments.
• Understand the importance of fair testing and proper control selection.
• Describe how instrumentation and procedural constraints affect reproducibility.+ Show more

Learning Objectives

• Compare physical and chemical changes using particle-level reasoning.
• Use observable evidence (gas, color change, precipitate) to identify signs of chemical change.
• Distinguish “new substance formed” evidence from changes in state or shape.

Learning Objectives

• Identify observable signs of chemical changes
• Differentiate between physical and chemical changes
• Recognize indicators such as gas production, color change, and precipitate formation+ Show more

Learning Objectives

• Identify factors that influence the speed of chemical reactions
• Explain how temperature, concentration, surface area, and catalysts affect reaction rates
• Connect molecular collision frequency and activation energy to observable rate changes+ Show more

Learning Objectives

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

Learning Objectives

• Understand the differences between physical and chemical changes at the particle level.
• Identify observable indicators of chemical change such as gas production, color change, or precipitate formation.
• Distinguish between physical and chemical changes based on evidence and outcomes.+ Show more

Learning Objectives

• Describe the differences between passive and active transport mechanisms across membranes.
• Explain the roles of carrier proteins, pumps, and vesicular processes in membrane transport.
• Relate transport mechanisms to cellular functions such as nutrient uptake, ionic balance, and volume regulation.+ Show more

Learning Objectives

• Understand the dynamics of water systems in large basins, including hydrologic cycles and watershed connectivity.
• Analyze the challenges related to groundwater-surface water interactions and governance in transboundary water basins.
• Evaluate environmental issues such as contaminant sources, nutrient loading, and invasive species impacts.+ Show more

Learning Objectives

• Describe the differences between passive and active transport mechanisms in cell membranes.
• Explain how diffusion and osmosis contribute to maintaining cellular homeostasis.
• Identify factors affecting the rate of diffusion and osmosis across membranes.+ Show more

Learning Objectives

• Understand the process of natural selection and how it leads to adaptation.
• Identify key factors that influence evolutionary change in populations.
• Explain how environmental pressures can shift traits over generations.+ Show more

Learning Objectives

• Understand the steps involved in the scientific method and inquiry.
• Describe how empirical evidence supports scientific claims.
• Explain the importance of controlled experiments and peer critique.+ Show more

Learning Objectives

• Use surface area formulas to calculate total outside area of 3D shapes.
• Combine base area and lateral area to find the total surface area for composite shapes.
• Solve equations that come from surface area formulas involving π.+ Show more

Learning Objectives

• Identify factors that influence the speed of chemical reactions.
• Explain how temperature, concentration, surface area, and catalysts affect reaction rates.
• Connect molecular collision concepts to observable reaction changes.+ Show more

Learning Objectives

• Explain energy conservation in closed systems by tracking kinetic energy changes and energy transfers.
• Distinguish elastic vs. inelastic collisions using energy accounting.
• Describe how friction and work/heat move energy between objects and surroundings.

Learning Objectives

• Identify the central idea of a passage
• Determine supporting details that develop the main idea
• Analyze how explanations, examples, and transitions support an overarching topic+ Show more

Learning Objectives

• Explain how natural selection changes the frequency of heritable traits in a population over generations
• Identify the roles of variation and heritability in the process of adaptation
• Describe how changing environmental pressures can shift patterns of adaptation and evolutionary change

Learning Objectives

• Explain the differences between passive and active transport mechanisms across cell membranes.
• Identify various types of transport processes including diffusion, osmosis, facilitated diffusion, and active transport.
• Connect the functions of carrier proteins and pumps to maintaining ionic gradients and nutrient uptake.+ Show more

Learning Objectives

• Identify the central idea of a text and explain how it is developed using strategic details
• Analyze how explanations, examples, and transitions strengthen a writer’s main point
• Describe how ordering and shifting emphasis change the meaning or impact of evidence

Learning Objectives

• Identify how central ideas are strengthened through strategic selection of details, explanations, and examples.
• Analyze how transitions and ordering of paragraphs help develop and refine an author’s claim.
• Explain how evidence appears throughout a text and how emphasis can shift as ideas become more specific.

Learning Objectives

• Differentiate physical and chemical changes using particle-level reasoning.
• Identify observable chemical indicators such as gas production, color change, and precipitate formation.
• Use evidence-based claims to decide whether a new substance formed.

Learning Objectives

• Use discussion moves to respond to a claim by adding, refining, or challenging details with relevant evidence.
• Explain how ideas connect across turns and how that connection strengthens or changes a shared understanding.
• Identify strong evidence from a referenced source or shared text and distinguish it from unsupported opinions.