Grade 3 Science Worksheets

Learning Objectives

• Explain how forces can combine to create a single net effect on an object
• Use directional arrows to model co-directional and opposite forces qualitatively
• Describe how a dominant force direction affects resulting motion

Learning Objectives

• Describe steady-speed motion and changing-speed motion using distance-over-time ideas
• Use relative language or simple ratios to explain which object is moving faster
• Interpret short distance-over-time records to order motions and estimate which is faster+ Show more

Learning Objectives

• Explain how multiple simultaneous forces combine to create a net effect on an object’s motion.
• Use directional arrow ideas to determine whether forces add or cancel when they point the same or opposite directions.
• Compare qualitative force strengths to predict the dominant direction of motion.

Learning Objectives

• Identify observable properties of materials, such as color, texture, size, shape, and how they respond to light or touch
• Compare two material samples by describing similarities and differences in their properties
• Use evidence from observations to explain what a material is like

Learning Objectives

• Compare how annuals, biennials, perennials, and woody plants differ in germination, flowering, seed set, and dormancy timing.
• Explain how seeds use dormancy and how seasonal cues help plants begin growth when conditions improve.
• Describe how seed banking and multi-year survival strategies help plant populations persist after unfavorable seasons.+ Show more

Learning Objectives

• Explain how shadows form when objects block some light.
• Describe how opaque, translucent, and transparent materials affect light and visibility.
• Use observations about light to make and support simple science explanations.

Learning Objectives

• Identify common load types acting on structures, including dead loads and live loads.
• Distinguish point loads from distributed loads using everyday examples.
• Describe how internal forces (compression, tension, bending, and shear) relate to common structure parts such as beams, columns, and arches.+ Show more

Learning Objectives

• Understand how human activities affect soil quality.
• Identify practices that help conserve soil health.
• Recognize environmental consequences of soil disturbance.+ Show more

Learning Objectives

• Describe how matter can change state when thermal energy is added or removed
• Compare what happens to solids, liquids, and gases during melting, freezing, evaporation, and condensation
• Explain how shape, volume behavior, and flow help identify different states of matter

Learning Objectives

• Explain how scientists use evidence to check whether a model’s predictions match observed results.
• Describe how evidence can support or challenge a model.
• Revise a scientific explanation so it fits both the model and the evidence.

Learning Objectives

• Identify different seed dispersal strategies such as wind, animal, water, and ballistic ejection.
• Explain why dispersal helps plants colonize new areas over generations.
• Describe how dispersal patterns can affect gene flow and the spatial distribution of plant populations.

Learning Objectives

• Explain how the properties of rocks and soil make them useful for different jobs.
• Compare how rocks and soil behave with water and movement in the environment.
• Use evidence from a text to match materials to human-built and natural uses.

Learning Objectives

• Describe how xylem moves water using transpiration pull and how phloem moves sugars to support plant growth.
• Compare herbaceous and woody stems, including vascular bundle arrangement and secondary growth in trees.
• Explain how lignified tissues strengthen stems and how structure helps plants handle mechanical stress.

Learning Objectives

• Identify the main parts of vascular plants: roots, stems, leaves, and flowers
• Describe how each plant part helps the plant survive, grow, and reproduce
• Use examples such as taproots, woody stems, broad leaves, and composite flowers to explain plant part functions

Learning Objectives

• Identify observable features (such as body covering, leaf shape, number of legs, and seed coat type) used to classify organisms.
• Use simple, consistent classification rules that are based on visible traits.
• Compare organisms by describing how they are similar or different using shared observable features.+ Show more

Learning Objectives

• Identify major flower parts and describe what roles sepals, petals, stamens, and pistils play in reproduction
• Explain how pollen is produced, how stigma receives pollen, and how fertilization leads to seeds
• Compare wind pollination and animal pollination and describe how nectar, scent, and color can help pollinators

Learning Objectives

• Describe the main stages in a plant life cycle from seed to adult plant.
• Explain how water and air help a seed during early germination.
• Explain how light helps an adult plant make energy and grow leaves.

Learning Objectives

• Sequence the main stages in a plant life cycle from seed to adult plant.
• Explain how water and air help early germination and root growth.
• Describe how light supports energy-making and leaf growth as the plant develops.+ Show more

Learning Objectives

• Describe the major stages of seed germination, including imbibition, radicle emergence, hypocotyl/epicotyl growth, cotyledon role, and true-leaf emergence.
• Explain how seed reserves support early plant growth before photosynthesis begins.
• Identify which environmental conditions (moisture, temperature, oxygen) help seeds germinate successfully.

Learning Objectives

• Identify the four main stages of insect metamorphosis: egg, larva, pupa, and adult.
• Describe how body changes help animals meet different needs at each stage.
• Explain why stage changes are important for survival and reproduction.

Learning Objectives

• Explain how a force (push or strike) can create vibrations in an object
• Describe how stronger forces usually produce larger vibrations and louder sound
• Connect vibrating objects to the way sound travels through a surrounding medium+ Show more

Learning Objectives

• Describe the major stages of seed germination from water absorption to the appearance of true leaves.
• Explain the role of seed reserves and cotyledons in early plant growth.
• Identify environmental requirements for germination, including moisture, temperature, and oxygen.

Learning Objectives

• Identify the main plant parts (roots, stems, leaves, and flowers) in a vascular plant.
• Describe how each plant part helps the plant survive, grow, and reproduce.
• Connect specific examples (taproots, woody stems, broad leaves, composite flowers) to the functions of plant organs.

Learning Objectives

• Explain that friction is a resistive force between surfaces that slows or stops moving objects.
• Describe how surface texture and materials can change how easily something slides or rolls.
• Compare sliding and rolling as ways motion can be opposed by friction.+ Show more

Learning Objectives

• Explain how vibrating objects produce sound
• Describe how pitch and volume can change based on vibrations
• Identify examples of sound makers and the vibrations they create+ Show more

Learning Objectives

• Explain how classification rules use visible traits to group organisms clearly.
• Use a step-by-step set of features to place organisms into the correct group.
• Evaluate whether a new organism fits a group by checking the same rule features.

Learning Objectives

• Explain what a classification rule is and why it must be based on observable features.
• Use visible traits (such as body covering, leaf shape, number of legs, or seed coat) to group organisms.
• Compare two organisms by describing similarities and differences using shared observable features.

Learning Objectives

• Explain how temperature affects water vapor and cloud formation
• Describe how condensation and gravity lead to precipitation
• Use observations of weather to connect clouds with when rain (or snow) happens

Learning Objectives

• Explain how reflection and absorption change what we see when light hits an object.
• Describe how shiny and dark surfaces affect brightness and appearance.
• Use observations to connect reflected and absorbed light to an object’s look.

Learning Objectives

• Compare motions by interpreting distance-over-time information.
• Identify steady-speed motion versus changing-speed motion using simple data.
• Use numerical ratios and relative language (faster, slower, same speed) to describe which object moves more quickly.

Learning Objectives

• Organize science data in tables and graphs to make patterns easier to see.
• Use evidence from a data representation to support a claim or explanation.
• Explain how changes across trials or conditions can reveal a repeating pattern.

Learning Objectives

• Identify everyday examples of water phase changes caused by heating and cooling
• Explain how melting, freezing, evaporation, and condensation describe changes between states of matter
• Connect temperature/heat energy to visible changes in water (solid, liquid, gas)

Learning Objectives

• Explain what a habitat is and how it provides shelter, food, and water for living things.
• Describe how different habitats (forest, pond, field) meet the needs of organisms.
• Identify the role of physical surroundings and resources in helping organisms survive.+ Show more

Learning Objectives

• Describe how thermal energy causes matter to change state (solid, liquid, gas).
• Identify state-change processes such as melting, freezing, evaporation, and condensation.
• Explain how state changes can be observed through shape and whether matter flows.

Learning Objectives

• Explain how water changes form during the water cycle (vapor, liquid, solid).
• Describe how cooling and heating affect evaporation, condensation, and precipitation.
• Identify connections between clouds and Earth’s surface in the water cycle.

Learning Objectives

• Explain how intended function, load paths, and support locations affect the strength and stability of simple structures.
• Describe how material compatibility and connection quality influence how loads transfer through a structure.
• Use simple evaluation strategies to compare expected forces with material limits and identify common failure modes.

Learning Objectives

• Identify how load bearing structures keep their shape when forces push or pull on them.
• Explain how design features like triangles, wider bases, and cross-bracing increase stability.
• Use testing evidence (bending, alignment, and support) to improve a structure design.

Learning Objectives

• Explain what makes a science question testable using evidence.
• Identify what observations and measurements can serve as evidence for a question.
• Match a claim to the type of evidence that could support it.

Learning Objectives

• Understand how clouds form through condensation and water vapor.
• Identify the relationship between temperature, evaporation, and precipitation.
• Describe different types of precipitation such as rain and snow.+ Show more

Learning Objectives

• Understand how objects block light to form shadows.
• Identify materials as opaque, transparent, or translucent based on light transmission.
• Explain how different materials affect what can be seen through them.+ Show more

Learning Objectives

• Understand how different properties can be used to sort and describe materials.
• Identify and compare properties such as mass, volume, texture, and shape.
• Use evidence to distinguish between different materials in everyday contexts.+ Show more

Learning Objectives

• Understand that sound is produced by vibrations.
• Identify different sources of sound that involve vibrations.
• Explain how vibrations travel through a medium to produce sound.+ Show more

Learning Objectives

• Understand the key concepts of simple structure design, including strength and stability.
• Identify common failure modes and ways to prevent them.
• Evaluate design choices based on load paths, support positions, and material properties.+ Show more

Learning Objectives

• Identify the main parts of a flower and their roles in reproduction.
• Explain how pollen is produced and received for fertilization.
• Differentiate between wind pollination and animal pollination with examples.+ Show more

Learning Objectives

• Understand how a sloped surface affects an object's tendency to move.
• Identify how slope steepness influences speed of sliding or rolling objects.
• Recognize the difference in motion on gentle versus steep inclines.+ Show more