Grade 3 Science Worksheets

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

• Use evidence from a text to make a reasoned claim about a solution for flood risk.
• Compare benefits and trade-offs of hazard solutions using details from a short passage.
• Explain why a chosen design would work better during strong rain in a specific setting.

Learning Objectives

• Identify the controlled variables in a fair test.
• Explain why keeping conditions the same helps results make sense.
• Connect test results to design improvements.

Learning Objectives

• Explain what a force is and that forces can act by touching or without touching.
• Identify how balanced forces keep an object’s motion the same.
• Describe how unbalanced forces change an object’s motion.

Learning Objectives

• Identify an external structure on an animal or plant.
• Explain what the structure does in the life of the organism.
• Use clues from a reading passage to answer science questions.

Learning Objectives

• Identify a repeating motion pattern using time comparisons.
• Use distance and time ideas to describe how rolling motion changes.
• Predict what might happen next in a rolling motion pattern.

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

• Identify inherited traits in a family by reading and observing similarities.
• Describe how variation can still happen even when traits are inherited.

Learning Objectives

• Explain how weathering can break rocks into smaller pieces.
• Identify cause-and-effect relationships in a science text.
• Describe how small rock pieces can be moved later by water, wind, or ice.

Learning Objectives

• Identify the main idea of a science passage about group survival.
• Find key details that explain how groups help organisms survive.
• Use evidence from the passage to answer questions about traits and resources.

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

• 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 the main idea and key details from a short weather-data description.
• Use notes and simple data to describe daily weather changes.
• Explain how clouds and temperature can vary from day to day.

Learning Objectives

• Understand how soil properties affect water retention, drainage, and aeration.
• Identify the differences among loam, clay, and sandy soils in terms of plant suitability.
• Explain how soil structure influences plant growth and nutrient uptake.+ Show more

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 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

• Identify safe tool-use practices for measuring, joining, and shaping materials.
• Explain why using a tool for its intended purpose helps prevent accidents and improves results.
• Apply safety rules to a classroom tool-work scenario.

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

• 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 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 Earth’s rotation causes day and night.
• Describe how sunlight reaches the side of Earth facing the Sun.
• Recognize that Earth’s motion, not the Sun’s motion, creates the daily cycle.

Learning Objectives

• Explain how predators and prey depend on each other within an ecosystem.
• Describe how changes in prey population can affect predator survival and behavior.
• Use evidence to support how food and shelter needs connect different organisms in a habitat.

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 temperature and water vapor help form clouds
• Describe how condensation can lead to precipitation (rain or snow)
• Use observations of cloudiness and timing to connect weather to water’s changing forms

Learning Objectives

• Explain how test results provide evidence for improving a design.
• Describe how specific changes (shape, support, or materials) can improve performance.
• Match outcomes from a test to the original problem goal and revise a solution.

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 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

• 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 prototype is and why testing is important for improving a design
• Identify key observation criteria during prototype testing: strength, fit, stability, and function
• Compare testing results to the intended goal to decide what to improve in a design

Learning Objectives

• Explain how an organism’s survival needs can change as it grows and develops.
• Describe examples of changing needs in plants and animals at different life stages.
• Use evidence from a text to identify relationships between growth and resources.

Learning Objectives

• Compare rocks and soil by appearance and by how they respond to pressure and handling.
• Describe how soil is made from smaller particles and organic matter, while rocks are usually solid pieces.
• Explain how properties of rocks and soil can affect where plants and water are found.

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

• Explain the difference between reflection and absorption when light reaches an object.
• Describe how shiny and dark surfaces change how bright an object looks.
• Use observations of brightness to predict whether an object reflects or absorbs more light.

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

• 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 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

• 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

• Explain how a habitat provides shelter, food, water, and environmental conditions for living things.
• Identify examples of shelter in different habitats (forest floor, pond, field).
• Describe how living things in the same habitat interact when their needs overlap.

Learning Objectives

• Explain how water changes form (liquid, vapor, and solid) during the water cycle
• Describe the roles of evaporation, condensation, and precipitation in moving water through air, clouds, and the ground
• Use temperature changes to predict whether water will become vapor, liquid droplets, or ice

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 how simple machines help people do work by changing force or direction
• Identify examples of levers, pulleys, and inclined planes and describe what each one changes
• Use simple machine vocabulary (effort, load, force, direction) to answer science questions

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

• Identify examples of water changing phases when heated or cooled.
• Explain solid, liquid, and gas changes using everyday observations.
• Match phase changes (melting, freezing, evaporation, condensation) to states of matter.

Learning Objectives

• Explain how plants get water, minerals, air, and light to survive.
• Describe how animals get food, water, air, and shelter to survive.
• Compare how different species can use different body structures to meet the same needs.

Learning Objectives

• Explain how observations and measurements can be organized into clear representations like tally tables and bar graphs.
• Use correct labels and an appropriate scale to make data in a representation easier to compare.
• Identify patterns and comparisons in data representations and explain what they show.

Learning Objectives

• Explain how vibrations produce sound.
• Identify common sound sources and describe how they vibrate.
• Classify sound effects using cause-and-effect reasoning.

Learning Objectives

• Identify observable weather conditions such as temperature, precipitation, and wind.
• Describe how weather can change from day to day using measurements and everyday observations.
• Compare weather conditions across multiple days to notice patterns.

Learning Objectives

• Explain that many light paths can be described as straight lines.
• Identify how light behaves when it meets an opening, a barrier, or an edge.
• Use evidence from simple observations to describe where light can and cannot reach.