Grade 3 Science Worksheets

Learning Objectives

• Explain the difference between a claim and evidence
• Use evidence to support a reasoning statement that answers a question
• Recognize patterns in observations over time and across comparisons+ Show more

Learning Objectives

• Differentiate between weather and climate using appropriate time scales.
• Identify examples of weather events versus long-term climate patterns.
• Explain why a single day or storm does not automatically change a region’s climate.

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

• Identify how speed changes over time using distance measurements at regular intervals
• Explain the difference between constant speed and changing speed patterns
• Use a distance-over-time pattern to make predictions about future positions

Learning Objectives

• Explain how vibration rate affects perceived pitch (higher rate = higher pitch).
• Describe how vibration strength relates to loudness.
• Use evidence from observations to connect sound characteristics to vibrating motion.

Learning Objectives

• Explain how climate differs from weather and how climate is described over long time spans.
• Identify typical temperature and precipitation patterns in regional climate descriptions.
• Use regional climate ideas to predict how plants, animals, and people plan for usual conditions.

Learning Objectives

• Explain how adding forces (net force) affects an object's motion.
• Determine whether opposite forces cancel or add by comparing their directions and strengths.
• Use everyday examples (pushes, tug-of-war, stacked pushes) to predict motion changes.

Learning Objectives

• Explain that living things grow through predictable life cycle stages.
• Identify common stages such as egg, juvenile, and adult in familiar organisms.
• Describe how life cycle patterns connect one generation to the next.

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

• 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 why safe tool use helps prevent injuries and protects materials.
• Identify safe workspace behaviors and correct tool handling practices.
• Use safety rules to choose appropriate actions when building or measuring.

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

• Explain how friction is a force that opposes motion between surfaces in contact
• Describe how surface roughness affects how quickly an object slows down
• Predict what happens to distance traveled when friction changes

Learning Objectives

• Identify key flower parts and explain how they help produce seeds.
• Describe how fruit forms to protect seeds and help with dispersal.
• Explain why seeds are important for starting new plant life cycles.

Learning Objectives

• Describe how root morphology and root architecture help plants survive in different soils and conditions.
• Compare fibrous root systems and taproot systems, including how they affect water uptake and nutrient acquisition.
• Explain how root hairs, storage roots, mycorrhizal associations, and specialized aerial roots support plant survival.+ Show more

Learning Objectives

• Explain how the properties of rocks help them be used for hard, durable surfaces and construction.
• Describe how soil properties support plant growth and water absorption.
• Compare how rocks and soil behave and explain why different materials are chosen for different jobs.

Learning Objectives

• Explain how Earth’s rotation creates daily day and night cycles.
• Describe how the amount of daylight changes across the year due to changes in the Sun’s position.
• Connect seasonal changes to observable differences in day length.

Learning Objectives

• Explain how evidence can support or challenge a model’s predictions.
• Use observations to judge whether a model’s main idea fits real results.
• Revise an explanation when evidence does not match a model.

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 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

• Explain how balanced forces keep an object’s motion the same (no change).
• Describe how unbalanced forces cause changes in speed or direction.
• Differentiate contact forces (pushes and friction) from net force effects.+ Show more

Learning Objectives

• Explain how magnets interact through forces that act at a distance.
• Distinguish magnetic forces from contact forces such as pushing and friction.
• Describe how magnetic interaction strength changes with distance and pole orientation.+ Show more

Learning Objectives

• Explain how an organism’s structures help it survive by linking form to function.
• Use evidence to describe how internal and external structures support life processes.
• Compare structural differences between species and predict how those differences affect survival and reproduction.

Learning Objectives

• Generate multiple simple solution ideas for a science design problem using sketches or models.
• Compare solutions by using measurements and evidence from tests.
• Identify advantages and trade-offs by matching outcomes to given criteria and constraints.+ Show more

Learning Objectives

• Explain how group living can help animals survive using observable traits and ecological context.
• Describe how organisms in a group may share resources such as food, shelter, or protection.
• Use evidence-based reasoning to support claims about cooperation and competition in nature.+ Show more

Learning Objectives

• Represent local weather observations (temperature, precipitation, and cloud cover) using simple graphs and tables
• Identify daily and seasonal patterns in weather data across weeks and months
• Interpret graphical information to describe changes in weather variability and precipitation trends+ 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

• Explain that a force is a push or a pull that can change how an object moves.
• Describe how force has direction and magnitude using everyday examples.
• Distinguish between contact forces and non-contact forces in simple terms.

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

• Identify rigid and pin connection types and explain how they influence structural stiffness and stability.
• Describe how nails, bolts, welds, and adhesives transfer load through a joint.
• Explain how joint geometry, bearing area, and fastening method affect stress concentration and possible failure.

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 common types of loads on structures, including dead loads, live loads, and different ways forces can act (point and distributed).
• Describe how internal forces such as compression, tension, bending, and shear relate to everyday parts like beams, columns, and arches.
• Explain how different loads can change a structure’s stability and influence design choices such as supports.

Learning Objectives

• Explain how loads travel through a structural system from where they are applied to supports and foundations.
• Identify axial forces, bending moments, and shear in simple trusses, beams, and columns.
• Describe what supports and foundations do when they accept combined loads.

Learning Objectives

• Describe how moisture, corrosion, freeze-thaw cycles, and ultraviolet (UV) light can weaken materials over time.
• Explain how material durability affects strength and stiffness in structures.
• Identify maintenance actions and protective treatments that extend a structure’s reasonable lifespan.+ Show more

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 major seed dispersal strategies (wind, animal, water, and ballistic) and describe how each works.
• Explain why seed dispersal helps plants colonize new areas and reduces competition with parent plants.
• Describe how dispersal patterns influence gene flow and the spatial distribution of plant populations.+ Show more

Learning Objectives

• Explain how soil, light, water, temperature, and nutrients affect plant growth and survival.
• Describe how human practices (like crop rotation and irrigation) can change environmental conditions for plants.
• Use examples to connect environmental factors to germination timing, growth rates, and where plants establish.

Learning Objectives

• Explain how animals form groups (flocks, herds, schools, or colonies) to improve survival.
• Describe how group behavior can reduce individual risk during threats.
• Use evidence from a short passage to identify main ideas about group survival behaviors.

Learning Objectives

• Explain how animals in groups can find food more successfully than alone
• Describe examples of cooperative foraging using signals or coordinated movement
• Use scientific words such as forage, signal, and coordinated to answer questions+ Show more

Learning Objectives

• Generate multiple distinct solution options for the same design problem
• Explain how different structures and materials can affect outcomes like stability and impact resistance
• Use criteria (constraints and desired outcomes) to evaluate and improve solution ideas

Learning Objectives

• Identify the parts of a simple design problem statement: a real need or want, the situation, the goal, and success criteria.
• Distinguish between describing what must change (goal and success) and choosing specific materials or exact measurements.
• Create and evaluate clear design problem statements using plain, targeted language.

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

• Identify patterns in an object’s motion over equal time intervals.
• Use a pattern to predict what happens next in an object’s position or distance.
• Explain how repeated measurements support motion predictions.

Learning Objectives

• Explain that combining materials can create a new substance with new properties.
• Identify evidence of new substance formation such as color change, new smell, temperature change, or new behavior.
• Compare initial and final materials to decide whether a chemical change likely occurred.

Learning Objectives

• Identify observable properties of common materials (color, texture, hardness, and whether they are solid or liquid).
• Explain how a substance’s properties can help distinguish it from other substances.
• Describe how some properties stay the same even when a material changes state.+ Show more

Learning Objectives

• Explain how to compare two solutions using the same criteria and constraints.
• Identify observable evidence that shows which solution meets criteria better.
• Describe which features likely caused a solution to perform better or worse.+ Show more

Learning Objectives

• Identify key properties of solids, liquids, and gases (shape, volume, and how they move).
• Use evidence from observations to describe how matter changes behavior in different states.
• Explain how gases spread out, liquids keep volume but change shape, and solids keep both shape and volume.

Learning Objectives

• Identify criteria for success and explain how they can be tested using observable results.
• Recognize constraints and describe how they limit materials, time, or cost in a design problem.
• Sort statements into criteria or constraints and use both to evaluate and improve a solution.