Grade 3 Science Worksheets

Learning Objectives

• Compare rocks and soil using appearance and physical properties
• Describe how particle size and organic matter affect soil
• Explain how rocks break and how soil forms over time+ Show more

Learning Objectives

• Describe how a habitat provides shelter, food, and water to living things
• Identify habitat features in forests, ponds, and fields that help organisms survive
• Explain how overlapping needs in the same habitat can lead to interactions between organisms+ 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

• 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

• Identify examples of melting, freezing, evaporation, and condensation in everyday situations
• Describe how heating and cooling connect to changes between solid, liquid, and gas states of water
• Explain that the same material can appear in different states based on temperature+ Show more

Learning Objectives

• Describe how moisture, freezing, and sunlight can weaken materials over time
• Identify how corrosion affects metal strength and stiffness
• Explain why design choices include safe margins for expected environmental exposure

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 observable physical properties of matter such as color, shape, size, and texture
• Compare objects made from different materials using clear, reliable observations
• Explain how observations help scientists describe and classify materials without changing them+ Show more

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

• 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

• Define weathering and explain how it differs from weather.
• Identify patterns of how wind, water, temperature changes, and sunlight affect rocks and soil.
• Describe evidence of weathering changes in everyday environments.

Learning Objectives

• Explain how observations can provide evidence to answer a scientific question.
• Write or identify a testable question that can be answered with a fair investigation.
• Connect results back to the original question by using evidence from observations or measurements.

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 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 predators and prey depend on each other within an ecosystem.
• Identify how changes in prey numbers can affect predator survival.
• Describe how prey need habitat and plant life for food and shelter.

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 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 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

• 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

• 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

• 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

• 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

• Describe the stages of a plant life cycle from seed to adult plant.
• Explain how water, air, and light help plants grow during different stages.
• Identify why adult plants produce seeds to continue the life cycle.

Learning Objectives

• Explain the difference between weather and climate using long-term averages and ranges
• Describe how scientists use many years of data to find typical temperature and precipitation conditions
• Identify how variability and extremes can be included using ranges, not just one year’s results+ Show more

Learning Objectives

• Explain that magnets can attract and repel without touching
• Distinguish magnetic forces from contact forces like pushing and friction
• Describe how distance and pole orientation can change a magnet’s interaction strength

Learning Objectives

• Identify criteria in a problem.
• Compare solution ideas using evidence from simple models.
• Use measurements and observations to explain trade-offs.

Learning Objectives

• Explain how root structures help plants take in water
• Identify evidence that links form (root features) to function (water uptake)
• Describe cause-and-effect relationships in plant survival

Learning Objectives

• Identify the desired function of a design problem.
• Name measurable success measures for a design.
• Recognize constraints that can limit a solution.

Learning Objectives

• Explain how forces combine to create a net effect on an object’s motion
• Use directional arrows and qualitative magnitude words (stronger/weaker) to predict net direction
• Identify when forces add, reduce, or cancel each other

Learning Objectives

• Explain how a sloped surface changes an object's tendency to move by comparing the gravity component along the slope to the force of friction.
• Compare how gentle and steep inclines affect how fast a sliding or rolling object tends to move downward.
• Use examples of sliding or rolling objects on slopes to predict motion on different incline angles.

Learning Objectives

• Explain how soil, light, water, temperature, and nutrients affect germination and plant growth
• Describe how soil compaction and salinity can reduce plant survival
• Use real-world examples to show how agricultural practices like crop rotation and irrigation change where plants can grow

Learning Objectives

• Explain how rigid and pin connections differ in how they transfer loads.
• Describe how fasteners and adhesives affect joint stiffness and stability.
• Identify factors in joint design that influence stress concentration and joint failure.

Learning Objectives

• Explain how human activities can reduce soil quality and cause erosion, compaction, nutrient loss, and pollution.
• Describe how conservation actions like keeping ground cover and reducing disturbance help protect soil and water.
• Connect soil health to food production, water quality, and ecosystem resilience.

Learning Objectives

• Compare fibrous and taproot root systems and explain how each helps a plant survive.
• Describe how root hairs and mycorrhizal associations improve water and nutrient uptake.
• Explain how storage and aerial roots support plant survival in different environments.+ 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 how science models help us understand ideas that are too big, too small, or not directly visible.
• Use models to identify relationships and make cause-and-effect predictions.
• Select evidence that supports a model and describe how the model helps explain observations.

Learning Objectives

• Explain how Earth’s tilt causes changes in the amount of daylight across the year
• Describe how Earth’s rotation creates the daily cycle of day and night
• Use observations of day length to connect time of year with seasonal daylight

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 energy and matter move through an ecosystem using producers, consumers, and decomposers.
• Identify relationships in simple food chains and describe how changes in one organism can affect others.
• Use evidence from a passage to determine main ideas and evaluate statements about food relationships.

Learning Objectives

• Explain how scientists use measurements to compare properties of matter.
• Identify what mass, volume, temperature, and size measurements describe.
• Use appropriate units and measurement tools to support fair comparisons.

Learning Objectives

• Explain how gases spread out to fill the space of their container.
• Describe how gas behavior changes when the container space changes.
• Identify key properties of gases, including having no fixed shape and taking up the container’s volume.+ Show more

Learning Objectives

• Explain how distance and elapsed time help describe motion.
• Use consistent units (such as metres and seconds) to record motion accurately.
• Compare speeds using simple numerical information from measurements.+ Show more

Learning Objectives

• Compare how annuals, biennials, perennials, and woody plants time germination, flowering, seed set, and dormancy.
• Describe seed banking and the seasonal cues that trigger life cycle transitions and dormancy.
• Explain how environmental variability and human land use (cropping cycles and habitat alteration) can favor certain life histories and affect population persistence.

Learning Objectives

• Explain that light often travels in straight lines and describe light paths using arrows or lines.
• Identify how openings, edges, and shadows show the direction of light travel.
• Use vocabulary related to light paths (straight line, shadow, opening, blocked).

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

• 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

• 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.