Grade 3 Science Worksheets

Learning Objectives

• Sort everyday materials using more than one property at a time.
• Use evidence from mass, volume, texture, and shape-keeping to compare materials.
• Explain how two different properties together can show how materials are distinct.

Learning Objectives

• Explain why shadows form when objects block light.
• Identify how opaque and transparent materials affect what you can see.
• Use evidence from a diagram to describe where light goes and where shadows form.

Learning Objectives

• Explain how light interacts with objects by reflecting and being absorbed
• Compare how shiny and dark surfaces look differently in terms of brightness
• Identify evidence of reflection and absorption from observations

Learning Objectives

• Explain how faster and slower vibrations affect perceived pitch
• Describe how stronger vibration motions relate to loudness
• Match vocabulary terms to definitions about sound and vibrations+ Show more

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

• Explain how a stronger force can create larger vibrations and louder sound
• Describe how sound depends on vibrations traveling through a medium
• Identify examples of force changing how an object vibrates+ Show more

Learning Objectives

• Define prototype and explain why testing is used
• Identify evidence from prototype tests (strength, fit, stability, function)
• Compare test results with the intended goal and describe how designs improve+ Show more

Learning Objectives

• Explain how engineers help structures support forces without collapsing
• Identify features that increase stability, such as triangles and wider bases
• Describe how testing results guide design improvements for stronger structures+ Show more

Learning Objectives

• Identify the key steps in the engineering design process: ask, define, propose, and consider constraints
• Explain how asking questions and defining a problem guide solution ideas
• Describe how proposed solutions connect to available materials and real-world constraints

Learning Objectives

• Explain how test results provide evidence to improve a design.
• Identify ways a design can be changed (shape, support, or materials) and what is being measured.
• Describe how matching outcomes to a goal helps refine a solution.

Learning Objectives

• Explain why a science question must be testable and connected to evidence.
• Identify observations and measurements that can provide evidence for a question.
• Choose evidence-based results that match a testable plan.+ Show more

Learning Objectives

• Explain how a model represents ideas that are not directly visible or are too large or small to observe.
• Use models to identify cause-and-effect relationships suggested by evidence.
• Compare what a model shows with what real observations show to decide if the model helps explain them.

Learning Objectives

• Identify patterns shown in tables and graphs
• Use data to support a claim with evidence
• Explain how organizing data helps comparisons+ Show more

Learning Objectives

• Explain that models make predictions and evidence can support or challenge them.
• Use observed patterns to decide whether evidence fits a model’s main idea.
• Revise a model-based explanation when new evidence does not match.

Learning Objectives

• Explain the difference between an opinion and an evidence-supported claim
• Use evidence to support a reasoning statement that answers a question
• Identify how comparisons and repeated observations strengthen explanations+ Show more

Learning Objectives

• Identify different data representations such as tally tables and bar graphs.
• Interpret labels, counts, and scales in simple graphs.
• Choose an appropriate representation to show patterns in data.+ Show more

Learning Objectives

• Explain how weathering slowly breaks down rocks and changes soil over time
• Identify patterns of weathering caused by wind, water, temperature changes, and sunlight
• Compare weathering and weather by describing what each term means

Learning Objectives

• Describe how evaporation, condensation, freezing, and melting are part of the water cycle.
• Explain how temperature changes cause water to change between liquid, vapor, and solid.
• Identify the role of clouds and precipitation in returning water to Earth.+ Show more

Learning Objectives

• Identify observable features that can be used to classify organisms
• Use simple classification rules to place organisms into groups
• Compare organisms by their shared observable features+ Show more

Learning Objectives

• Observe and describe patterns in an object's motion using distance and time.
• Identify regularities such as constant speed, speeding up on steeper slopes, and slowing down due to friction.
• Use data to predict what motion will look like next.

Learning Objectives

• Identify common external and internal body structures in plants and animals
• Match structures to the functions they help with for survival, growth, and reproduction
• Use models or simple drawings to show how different structures work together

Learning Objectives

• Explain how balanced forces affect an object’s motion.
• Identify how unbalanced forces change motion by starting, stopping, or changing direction.
• Compare contact forces (like friction) with the effect of net force on motion.+ Show more

Learning Objectives

• Describe how magnets can attract or repel each other without touching
• Distinguish magnetic forces from contact forces such as pushes and friction
• Explain how distance and pole orientation affect the strength of magnetic attraction or repulsion+ Show more

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 major stem parts and describe how xylem and phloem help plants transport resources.
• Explain how transpiration pull and sugar translocation support plant growth.
• Contrast herbaceous and woody stems, including vascular bundle arrangement and secondary growth.+ Show more

Learning Objectives

• Explain how energy changes cause matter to change state (solid, liquid, gas).
• Describe melting, freezing, evaporation, and condensation as physical changes.
• Use temperature information to predict which state change is most likely.

Learning Objectives

• Identify observable material properties such as color, texture, size, shape, and how materials respond to light or touch.
• Compare two material samples by describing both similarities and differences in their properties.
• Use evidence from observations to explain why properties help people describe and identify materials.

Learning Objectives

• Describe the typical layers (horizons) of soil and what they are like.
• Explain how processes like accumulation, leaching, and transformation help shape soil horizons over time.
• Use evidence such as color, texture, and root presence to identify soil horizons.

Learning Objectives

• Identify material properties that affect strength and stability (density, stiffness, tensile strength, compressive strength, brittleness).
• Compare common construction materials (wood, steel, concrete, and selected polymers) based on key properties.
• Connect material properties to real-world choices for loads, spans, connections, and durability.+ Show more

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

• Use multiple material properties (mass, volume, texture, and shape) as evidence to sort and describe materials.
• Explain how comparing two materials with shared properties—but different other properties—helps distinguish them.
• Make and justify claims about materials using observations rather than guessing.

Learning Objectives

• Identify how an object's direction can stay the same or change over time.
• Use observations from regular time moments to describe a direction or position pattern.
• Predict a likely next position when direction changes follow a repeating pattern.

Learning Objectives

• Explain how refining a design target clarifies the goal and limits acceptable solutions.
• Identify constraints and desired results in a simple science/design problem.
• Use refined targets to choose design ideas that can be compared fairly.

Learning Objectives

• Identify the main stages of metamorphosis in insects: egg, larva, pupa, and adult.
• Explain how each stage’s body form helps an organism meet its needs.
• Use vocabulary (larva, pupa, adult) to describe life cycle changes.

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 a sloped surface changes an object's tendency to move by redirecting the pull of gravity.
• Compare gentle versus steep inclines by describing how the slope angle affects downward motion tendency.
• Use examples of sliding and rolling to predict how speed tendency changes with slope and surface conditions.

Learning Objectives

• Explain what physical adaptations are and how they help organisms survive and reproduce.
• Identify examples of physical adaptations in animals and plants and match them to the habitat or need they support.
• Describe how different environments can lead to different body features.

Learning Objectives

• Explain how the vibration rate of an object affects the pitch we hear
• Describe how stronger vibrations relate to loudness
• Use evidence from observations to connect heard sound characteristics to vibrating motion

Learning Objectives

• Define behavioral adaptations and explain how they help organisms survive.
• Identify examples of behavioral adaptations triggered by temperature, light, or food availability.
• Compare how different organisms use behaviors such as migrating, hibernating, burrowing, and nesting to meet survival needs.+ Show more

Learning Objectives

• Identify key parts of daily weather observations, such as temperature, precipitation, and wind.
• Use daily weather measurements to compare what happens from one day to the next.
• Explain how observable weather conditions affect daily life.

Learning Objectives

• Compare annual, biennial, perennial, and woody plant life cycles by timing of germination, flowering, seed set, and dormancy.
• Explain how seed banking and seasonal cues help plant populations survive through unfavorable seasons.
• Describe how environmental variability and human land-use can favor certain life histories and affect population persistence.

Learning Objectives

• Identify pushes and pulls as forces that act on objects with a direction
• Describe how forces can start, stop, or change motion
• Use arrows and basic ideas of net force to predict what happens to an object

Learning Objectives

• Explain how rock weathering, deposition, and organic matter help form soil
• Identify physical, chemical, and biological processes that break rock into smaller particles
• Describe how earthworms and microbes contribute to soil structure and fertility

Learning Objectives

• Use consistent units to describe how far an object moves
• Measure and compare elapsed time using seconds
• Calculate and compare simple speeds using distance and time+ Show more

Learning Objectives

• Identify how data can be organized using tally tables, labeled drawings, and simple bar graphs.
• Use accurate labels and appropriate scales so a representation clearly shows comparisons.
• Explain why organizing observations helps people find patterns in data.

Learning Objectives

• Name the major stages of seed germination, including imbibition, radicle emergence, hypocotyl and epicotyl growth, and true leaf emergence.
• Explain how seed reserves support early growth until the plant can make its own food.
• Describe how moisture, temperature, and oxygen help seeds germinate successfully.

Learning Objectives

• Describe how forces move from where they act to supports through structural members.
• Identify how axial force, bending moment, and shear can appear in beams and trusses.
• Explain what supports and foundations do when they receive combined loads.

Learning Objectives

• Describe how moisture, corrosion, freeze-thaw cycles, and ultraviolet light can weaken structures over time
• Explain why protective treatments and maintenance help materials last longer
• Use cause-and-effect reasoning to choose materials with compatible durability for a given environment+ Show more