Grade 6 Worksheets

Learning Objectives

• Explain how food provides chemical building materials and stored energy to the body.
• Describe how digestion breaks large food molecules into smaller molecules that can be absorbed.
• Connect specific food molecules with different body needs (like proteins for structure and carbohydrates for quick energy).+ Show more

Learning Objectives

• Explain how photosynthesis provides energy for plant growth, repair, and reproduction
• Describe how plants store chemical energy in molecules to use later
• Connect matter changes in plant parts (leaves, stems, roots, and reproductive parts) to energy transformations

Learning Objectives

• Explain how limiting resources affect population size in an ecosystem.
• Identify examples of limiting resources such as nutrients, water, and space.
• Describe how organisms may respond when resources become scarce.

Learning Objectives

• Explain how photosynthesis converts light energy into chemical energy stored in sugar molecules.
• Identify reactants and products of photosynthesis and describe the role of oxygen release.
• Describe how energy flows from the Sun to producers and then to other organisms through feeding.

Learning Objectives

• Explain how birth rate, death rate, and resource availability affect population size over time.
• Interpret data trends to infer whether a population is increasing or decreasing and why.
• Use evidence from seasonal or habitat changes to support a population-change claim.

Learning Objectives

• Explain how atoms are conserved during chemical reactions using particle diagrams.
• Describe reactants and products as rearrangements of atoms rather than creation or destruction.
• Use particle-level evidence to connect conservation of atoms to observable changes.

Learning Objectives

• Explain how scientists compare properties of substances before and after an interaction to determine if a new substance forms.
• Identify evidence of chemical change, including changes in color, formation of a solid, gas release, and new material with different behavior.
• Distinguish between physical changes (appearance changes without new substances) and chemical changes (new substances with new properties).

Learning Objectives

• Use particle models to count atoms of each element on both sides of a chemical reaction
• Explain how conservation of matter is supported by matching atom counts in reactants and products
• Use evidence from particle-level reasoning to justify claims about new substances

Learning Objectives

• Explain mass conservation in terms of conservation of atoms in a closed system.
• Connect particle-level changes to macroscopic measurements of reactants and products.
• Use evidence from a model to predict whether total mass changes in a closed reaction.

Learning Objectives

• Explain how particle models distinguish physical changes from chemical reactions.
• Use particle ideas to describe how atoms and arrangements change during matter changes.
• Connect evidence of new substances to conservation of atoms.

Learning Objectives

• Explain how new substances form when atoms rearrange during a chemical change.
• Use macroscopic properties (such as solubility, conductivity, and melting behavior) to infer that composition has changed.
• Compare properties of reactants and products to distinguish chemical change from physical change.

Learning Objectives

• Identify reactants and products in a chemical reaction scenario
• Explain how product properties can differ from reactant properties as evidence that a reaction occurred
• Use particle diagrams to describe how atoms are rearranged during a reaction

Learning Objectives

• Explain how water vapor changes into liquid droplets or ice crystals during condensation.
• Describe how cloud formation connects atmospheric conditions to rainfall.
• Connect clouds to energy balance by explaining how they affect sunlight.

Learning Objectives

• Explain how energy from the Sun and gravity drive Earth system processes such as heating, evaporation, and the movement of water and sediments.
• Describe how changes in energy affect water’s state and how this relates to evaporation and cloud formation.
• Connect energy-driven weathering and transport to changes in where sediments and soils accumulate.

Learning Objectives

• Explain how moving water erodes materials, transports sediment, and deposits it elsewhere.
• Describe how water volume, flow speed, and surface material affect erosion and deposition.
• Identify real-world landforms and deposits formed by deposition over time.

Learning Objectives

• Explain how evaporation adds water vapor to the atmosphere when temperatures increase.
• Describe how transpiration from plants contributes water vapor to the air.
• Connect phase changes to the hydrosphere and atmosphere and the start of precipitation.

Learning Objectives

• Explain how precipitation infiltrates and percolates to recharge groundwater stored in aquifers.
• Describe how groundwater can supply streams as baseflow and help maintain river flow during dry periods.
• Identify how permeability and landscape geometry affect the connection between groundwater and surface water.+ Show more

Learning Objectives

• Explain how human actions can change the movement of water through Earth systems
• Describe how dams, withdrawals, pollution, and land-cover change can affect water quality and habitats
• Use cause-and-effect reasoning to predict impacts on aquatic life and flood risk

Learning Objectives

• Explain how physical and chemical weathering break rocks into sediments
• Describe how sediments move and deposit to form layered materials over time
• Connect biological processes to the formation of soil and nutrient availability+ Show more

Learning Objectives

• Explain how tables, bar graphs, and line graphs help organize and interpret numerical and categorical data
• Identify important features of graphs, such as consistent labels, units, and axes, for accurate reading
• Classify observations as numerical or categorical and choose an appropriate representation

Learning Objectives

• Explain how precipitation returns water to Earth’s surface.
• Describe how infiltration affects soil moisture and possible groundwater recharge.
• Compare infiltration and surface runoff as pathways for water movement.+ Show more

Learning Objectives

• Identify major water reservoirs on Earth and describe the form of water each one stores.
• Explain how state changes move water between reservoirs and affect where water is available over time.
• Distinguish between fast and gradual water movement between reservoirs using examples.

Learning Objectives

• Describe how water moves through a watershed using interconnected pathways shaped by terrain and land cover.
• Explain how gravity, infiltration, and vegetation affect the timing and amount of water moving downstream.
• Connect watershed processes to downstream conditions such as stream flow, erosion, and water quality.

Learning Objectives

• Explain how system thinking connects solution parts through inputs, outputs, and pathways.
• Use cause-and-effect reasoning to predict how changes in one component affect overall results.
• Describe how system failures can happen even when one part seems to work well.

Learning Objectives

• Explain how a design problem starts with a need and measurable requirements.
• Identify how sketches, dimensions, performance goals, and constraints guide possible solutions.
• Use safety and budget constraints to evaluate or improve a design.

Learning Objectives

• Explain how heritable variation and natural selection contribute to adaptation in populations.
• Describe how geographic separation and reproductive isolation lead to speciation.
• Use evidence (morphology, reproductive compatibility, and biogeography) to support claims about speciation.

Learning Objectives

• Explain the main steps of the water cycle and how they move water between Earth systems.
• Describe how water storage in glaciers and groundwater affects freshwater availability over time.
• Use water-cycle vocabulary to predict how land cover and temperature influence infiltration and streamflow.

Learning Objectives

• Describe how species richness and occurrence patterns can reveal biodiversity trends across space and time
• Explain how comparisons such as island faunas and latitudinal gradients help identify endemism and turnover
• Use ecological and historical factors (like habitat fragmentation and colonization) to interpret why communities differ

Learning Objectives

• Explain how fossil occurrences in different rock layers (strata) show patterns of change over geologic time.
• Use relative dating ideas to describe how fossils can be ordered, and compare this with radiometric dating.
• Describe how fossil assemblages can change when environments shift, leading to persistence or disappearance of taxa.

Learning Objectives

• Explain how heritable trait differences and environmental pressures can change trait frequencies over time
• Describe the role of differential reproductive success in natural selection
• Use examples (e.g., pollution, island finches, antibiotic resistance) to connect trait advantages to population change

Learning Objectives

• Interpret allele frequency tables and describe how trait frequencies can change over generations.
• Analyze time-series and frequency information to explain population growth, decline, and stabilizing patterns.
• Use proportional reasoning to compare scenarios such as directional change and population bottlenecks.

Learning Objectives

• Explain how Earth’s rotation causes day and night.
• Describe how Earth’s orbit and tilted axis lead to seasonal changes.
• Connect the Moon’s orbit to phases and the recurring monthly pattern.

Learning Objectives

• Explain how erosion and deposition reshape Earth’s surface over time.
• Identify the main agents of erosion (moving water, wind, ice, and gravity) and describe how they move sediment.
• Describe factors that affect erosion and deposition, including slope, rock resistance, vegetation, and water-flow strength.

Learning Objectives

• Explain how the lithosphere, hydrosphere, atmosphere, and biosphere interact as connected Earth systems
• Describe how energy from the Sun drives cycles that move water, gases, and heat
• Use cause-and-effect reasoning to predict how changes in one system can affect other systems

Learning Objectives

• Explain how the respiratory system exchanges gases using diffusion across gas-exchange surfaces.
• Describe how the digestive system breaks food into smaller molecules that can enter circulation.
• Connect coordinated air flow and digestion to energy release in cells.

Learning Objectives

• Explain how predator and prey populations affect each other in an ecosystem
• Describe how prey adaptations can reduce capture and influence survival
• Use cause-and-effect reasoning to predict population changes over time

Learning Objectives

• Explain how decomposers break down dead organisms and waste to return materials to the ecosystem.
• Describe the roles of fungi and bacteria in nutrient cycling within soil and water.
• Connect nutrient availability to ecosystem growth patterns over time.

Learning Objectives

• Explain how competition for limited resources can affect organisms’ survival and population sizes
• Identify traits that influence access to resources, feeding timing, and tolerance to conditions
• Use evidence from examples to distinguish direct competition from indirect effects on community members

Learning Objectives

• Explain how cells form tissues, tissues form organs, and organs form body systems.
• Match body organization levels to their functions in the body.
• Describe how changes at one organization level can affect overall system performance.

Learning Objectives

• Explain how homologous structures, vestigial organs, and conserved DNA sequences can support common ancestry.
• Use similarities and differences among traits to interpret branching relationships on a phylogenetic tree.
• Describe how ancestral-form indicators and morphological gradients can help form hypotheses about lineage splitting.

Learning Objectives

• Explain why risk assessment and hazard prevention matter during science investigations.
• Demonstrate safe tool and material handling and proper disposal of substances.
• Apply ethical principles such as humane treatment, informed consent, confidentiality, and environmental stewardship.

Learning Objectives

• Construct simple physical, diagrammatic, and mathematical models to represent real-world systems.
• Identify model assumptions and define model boundaries to make predictions more reasonable.
• Compare model predictions with observable outcomes to explain limitations and refine the model.+ Show more

Learning Objectives

• Organize qualitative and quantitative observations into tables and clear categories.
• Select appropriate graph types and label axes with correct units, scales, and legends.
• Interpret trends, outliers, and simple summary measures such as mean and median.

Learning Objectives

• Apply scientific methods to a local community stewardship issue while showing respectful engagement.
• Use protocols for consent and cultural sensitivity when collecting and discussing local observations.
• Communicate findings clearly to non-specialist audiences and support collaborative decision-making.

Learning Objectives

• Explain how scientific claims are supported by evidence and reasoning.
• Use graphs, diagrams, and models to communicate evidence clearly.
• Choose relevant data and cite sources when writing or speaking about scientific ideas.+ Show more

Learning Objectives

• Explain why teams use roles, shared documentation standards, and agreed protocols in scientific work.
• Describe how trackable versioning, clear attribution, and peer review improve reliability and transparency.
• Use evidence from conflicting observations to support negotiated decisions and reproducible reporting.

Learning Objectives

• Describe how a series circuit creates a single path for charge to move
• Explain why the current is the same through each element in a series circuit
• Use circuit properties to predict how brightness and voltage share change with series components

Learning Objectives

• Explain how voltage, current, and resistance are related using proportional reasoning.
• Predict how changing resistance affects current when voltage stays the same.
• Compare current and resistance behaviors in series and parallel circuits using numeric relationships.