Grade 3 Science Worksheets

Learning Objectives

• Understand the concept of balanced and unbalanced influences on an object.
• Learn how to predict whether an object will remain at rest or change motion based on combined influences.
• Identify scenarios where equal and unequal forces affect an object's movement.+ Show more

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

• 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

• 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

• Identify common life cycle stages for plants and animals
• Explain how needs can change as an organism grows from one stage to the next
• Describe how life cycles help populations continue from one generation to the next+ Show more

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

• 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

• Understand different types of connections used in structures.
• Learn how connection methods influence strength and stability.
• Identify common fasteners and their functions.+ 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

• Understand how inclined surfaces influence an object's tendency to move.
• Differentiate between gentle and steep inclines and their effects on motion.
• Identify factors, such as slope angle, that affect speed in inclined motion.+ Show more

Learning Objectives

• Understand how human activities affect soil quality and structure.
• Identify ways to conserve soil health and reduce environmental damage.
• Recognize the connection between soil quality, water, and ecosystems.+ Show more

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

• 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

• Understand how Earth's rotation causes day and night.
• Identify the role of the Sun's light in creating daytime and nighttime.
• Explain that Earth's motion, not the Sun's movement, causes the daily cycle.

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 safe tool-use practices that help people avoid injury and damage to materials.
• Explain why using the right tool for a task improves accuracy and results.
• Choose correct actions for an organized, safe workspace during building activities.+ Show more

Learning Objectives

• Identify common structural forms (arches, beams, frames) and describe how their shapes help them support loads.
• Explain how compressive and bending forces affect different structures in real-world examples.
• Compare span, curvature, and connection types to predict strength and stability.

Learning Objectives

• Identify common structural forms (arches, beams, frames) and describe how their shapes help carry loads.
• Compare compressive and bending behavior using simple, real-world construction examples.
• Explain how span and connections affect strength and stability in basic structures.

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

• Explain how a force can cause an object to vibrate
• Describe how vibration size affects the loudness of sound
• Identify how sound travels through a medium

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

• 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

• Explain how test results provide evidence for improving a design
• Describe how engineers use small changes to improve performance toward a goal
• Identify what to adjust when outcomes do not match the design goal

Learning Objectives

• Organize and interpret information from simple tables and graphs to find patterns.
• Use evidence from data to support a claim about a scientific question.
• Explain how reasoning connects a pattern to what the data show.

Learning Objectives

• Understand how earth materials like rocks and soil are used for specific purposes.
• Compare the properties of rocks and soil and how they support different needs.
• Explain why different materials are chosen for construction and environmental uses.+ Show more

Learning Objectives

• Explain how an evidence-supported claim connects a question to observations or results.
• Identify evidence types such as comparisons, repeated observations, and patterns over time.
• Revise an explanation so that it matches gathered evidence instead of personal opinion.

Learning Objectives

• Understand that force is a push or pull that can change an object's speed or direction.
• Identify real-life examples of forces such as pushing a toy car or opening a door.
• Distinguish between contact and non-contact forces in simple terms.+ Show more

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

• 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

• Explain how thermal energy changes matter’s state (solid, liquid, gas)
• Identify melting, freezing, evaporation, and condensation as state changes
• Describe how a sample’s shape and volume can change when it changes state+ Show more

Learning Objectives

• Identify observable properties of materials such as color, texture, size, and shape.
• Compare two material samples based on their properties.
• Understand how materials respond to light and touch.+ Show more

Learning Objectives

• Explain how equal forces in opposite directions can balance to keep an object’s motion unchanged
• Predict whether an object will remain at rest or change speed or direction based on net influence
• Describe net influence as the combined effect of all forces acting at the same time

Learning Objectives

• Understand how distance and time are used to describe motion.
• Learn the importance of using consistent units like metres and seconds.
• Compare different objects’ speeds using basic measurements.+ Show more

Learning Objectives

• Understand how data organization reveals patterns.
• Learn to interpret tables and graphs for comparisons.
• Connect patterns in data to reasoning and explanations.+ Show more

Learning Objectives

• Understand what makes a question testable and connected to evidence.
• Identify observations that relate to scientific questions.
• Learn how to select relevant evidence to support a question.+ Show more

Learning Objectives

• Understand how soil forms through weathering, deposition, and organic matter accumulation.
• Identify the roles of organisms such as earthworms, fungi, and microbes in soil formation.
• Explain the influence of climate, slope, and time on soil development.+ Show more

Learning Objectives

• Compare common building materials using density, stiffness, and strength properties.
• Explain how brittleness, corrosion resistance, and load type affect structural stability.
• Choose suitable materials for a simple construction scenario based on trade-offs.

Learning Objectives

• Understand the basic properties of common construction materials such as wood, steel, concrete, and polymers.
• Recognize how material properties influence construction choices related to strength and durability.
• Compare materials based on density, stiffness, tensile and compressive strength, brittleness, and corrosion resistance.+ Show more

Learning Objectives

• Use multiple properties (mass/volume, texture, and shape) to sort and describe materials more precisely.
• Explain how comparing two materials with shared and different properties strengthens evidence-based conclusions.
• Use evidence statements to decide whether they are true or false about sorting materials.

Learning Objectives

• Understand environmental factors that affect the strength and stiffness of materials over time.
• Identify different types of material decay such as moisture damage, corrosion, and ultraviolet degradation.
• Learn how maintenance, protective treatments, and material choice influence the lifespan of structures.+ Show more

Learning Objectives

• Explain how an external or internal structure helps an organism survive and reproduce.
• Identify evidence that links structure (form) to the job it performs (function).
• Compare how different species have different structures for similar life needs.+ Show more

Learning Objectives

• Understand how soil, light, water, temperature, and nutrients affect plant growth.
• Identify human practices like crop rotation and irrigation that influence plant development.
• Explain how environmental variables impact germination, growth rate, and survival of plants.+ Show more

Learning Objectives

• Explain what a prototype is and why it is tested.
• Identify evidence from testing (strength, fit, stability, and function).
• Match test observations to the intended goal of the design.

Learning Objectives

• Explain how scientific models represent ideas that are hard to see, measure, or predict
• Use models to describe relationships and cause-and-effect connections
• Choose evidence and observations that best support or improve a model

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

• Explain how weathering slowly changes rocks and soil
• Identify patterns in weathering caused by wind, water, sunlight, and temperature changes
• Distinguish weathering from weather

Learning Objectives

• Explain why shadows form when objects block light along its path
• Describe how light creates darker regions behind an object
• Compare how opaque, transparent, and translucent materials affect what we can see+ Show more

Learning Objectives

• Understand how organisms are classified based on observable features.
• Identify different features such as body covering, leaf shape, number of legs, and seed coat type.
• Learn classification rules that are consistent and based on direct observation.+ Show more