Grade 3 Science Worksheets

Learning Objectives

• Understand the steps involved in the engineering design process.
• Identify the importance of defining problems and proposing solutions.
• Recognize how asking questions and considering constraints aid in designing.+ Show more

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

• Identify observable material properties such as color, texture, size, shape, and response to light or touch.
• Compare two samples by describing similarities and differences in their material properties.
• Use evidence from observations to explain why two materials are alike or different.

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

• Identify the main parts of a flower and describe their roles in reproduction.
• Explain how pollen is produced, received by the stigma, and how fertilization leads to seeds.
• Compare wind pollination and animal pollination and describe traits that help flowers interact with pollinators.+ Show more

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

• Describe how water moves through soil using infiltration, percolation, capillary rise, and runoff
• Compare how soil texture and structure affect how quickly water spreads and drains
• Explain how slope can change surface runoff and water flow

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

• 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

• Describe how weathering, deposition, and organic matter help form soil
• Explain how physical, chemical, and biological processes break down rock
• Identify factors that influence the rate of soil formation and the development of fertile topsoil+ Show more

Learning Objectives

• Explain how producers, prey, predators, and habitats are connected in a simple ecosystem.
• Describe how habitat conditions affect plant growth and animal survival.
• Use cause-and-effect reasoning to show how changes in one part of an ecosystem can affect other parts.

Learning Objectives

• Identify common soil horizons and describe how they differ in color and texture
• Explain how water movement and soil processes affect soil layers over time
• Use landscape position and vegetation to predict which horizons may be thicker or more fertile+ Show more

Learning Objectives

• Identify how intended function and load paths affect the strength of a simple structure
• Explain how support location and span limitation help prevent sagging and collapse
• Describe common failure modes such as buckling, tension fracture, and joint slippage

Learning Objectives

• Describe how different root systems (fibrous and taproot) help plants get water and nutrients.
• Explain how root hairs and mycorrhizal associations increase nutrient and water absorption.
• Compare how storage roots and specialized aerial roots help plants survive in different environments.+ Show more

Learning Objectives

• Identify common types of simple machines and describe what kind of change they make to force or direction.
• Explain how levers, pulleys, and inclined planes can make work easier.
• Match simple machine vocabulary words with correct definitions.

Learning Objectives

• Identify major seed dispersal strategies (wind, animals, water, and ballistic ejection) and describe how they work
• Explain how dispersal patterns help plant populations colonize new areas over generations
• Describe how seed shape and timing can match dispersal methods to improve seed establishment+ Show more

Learning Objectives

• Explain how engineering design steps begin with a need or situation and lead to a workable goal.
• Identify how asking questions and defining the problem help guide a solution.
• Describe how proposed solutions must consider constraints such as size, time, and required function.

Learning Objectives

• Explain the first steps of the engineering design process: recognizing a need, asking questions, and defining a problem.
• Describe how engineers propose solutions using available materials and consider constraints such as size, time, and function.
• Use engineering design vocabulary (need, define, constraints, solution, function) to answer science questions.

Learning Objectives

• Explain how distance and elapsed time describe motion
• Calculate and compare speeds using consistent units
• Record motion results using clear numbers and short statements+ Show more

Learning Objectives

• Use a two-step classification rule to group organisms based on observable traits.
• Identify which trait to check next when classifying an unknown organism.
• Explain how classification rules create clear categories for comparing organisms.

Learning Objectives

• Describe how plants and animals are connected in a simple ecosystem
• Explain how habitat conditions affect which organisms can survive
• Identify predator-prey relationships and how they depend on shared habitats+ Show more

Learning Objectives

• Explain how predators depend on prey for food in an ecosystem.
• Describe how changes in prey numbers can affect predator survival.
• Identify how habitat and plant life support prey and shelter animals.+ Show more

Learning Objectives

• Understand the basic types of simple machines and their functions.
• Identify examples of levers, pulleys, inclined planes, wheels and axles, wedges, and screws.
• Explain how simple machines make work easier by changing force or direction.+ 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

• Identify the basic resources plants need to live and grow.
• Identify the basic resources animals need for energy, respiration, and protection.
• Match plant and animal structures to the needs they help meet.

Learning Objectives

• Identify stewardship practices that protect soil fertility and reduce erosion
• Explain how riparian buffers, reforestation, and compost support soil function
• Compare how urban green spaces and surface sealing affect groundwater recharge

Learning Objectives

• Identify common types of loads on structures, including dead and live loads, and point and distributed loads
• Explain how compression, tension, bending, and shear forces affect beams, columns, and arches
• Match structural members to the main internal reactions they experience

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

• Identify how classification rules use observable features to group organisms
• Use a given rule to place a new organism into the correct group
• Explain why classification creates clear categories and helps compare organisms

Learning Objectives

• Understand the different stages in an organism's life cycle.
• Identify key features and needs of organisms at each stage.
• Describe how growth and development change an organism over time.+ Show more

Learning Objectives

• Explain how soil pore size and structure affect water drainage and water retention
• Describe how aeration and oxygen supply help roots grow and take in nutrients
• Compare loam, clay, and sandy soils using trade-offs among retention, drainage, and root oxygen

Learning Objectives

• Identify key parts of soil and describe how they affect plant growth
• Compare sand, silt, and clay based on particle size and water behavior
• Explain how pore space, air, and organic matter affect soil aeration and nutrients

Learning Objectives

• Explain how friction is a resistive force that opposes motion between touching surfaces.
• Describe how surface texture and material pairings affect how easily objects slide or roll.
• Compare sliding versus rolling and predict which will slow down faster based on friction.+ Show more

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 the different components that make up soil.
• Understand how particle sizes affect soil texture and drainage.
• Compare sandy, silty, and clay soils in terms of permeability and suitability for plants.+ Show more

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

• Understand what weathering is and how it changes Earth materials over time.
• Identify different environmental factors that cause weathering.
• Distinguish between weathering and weather.+ 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

• Describe how balanced and unbalanced influences affect an object’s motion
• Explain what net influence means as the combined effect of several pushes or pulls
• Predict whether an object stays at rest or changes speed or direction

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

• 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

• Understand how to compare the motion of objects based on distance and time.
• Distinguish between steady-speed motion and changing-speed motion using visual and numerical summaries.
• Use ratios and relative language to express which object is faster.+ Show more

Learning Objectives

• Understand that light travels in straight lines.
• Describe how light moves through space and interacts with openings or edges.
• Explain observations related to light paths and regions receiving light.+ Show more

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

• Explain the basic survival needs of plants and describe how plants get them from the environment.
• Describe the basic survival needs of animals and give examples of how animals meet those needs.
• Compare how different body structures help plants and animals access the same basic needs.+ Show more

Learning Objectives

• Explain how light appears to travel in straight lines in everyday situations
• Describe how blocks and openings change where light can reach
• Use simple evidence to predict which areas will be brighter or darker

Learning Objectives

• Explain how Earth’s daily rotation causes day and night.
• Describe how the Sun’s position in the sky changes across the year.
• Connect seasonal changes to differences in day length at a location.+ Show more

Learning Objectives

• Compare rocks and soil using appearance and physical properties.
• Explain how rock and soil can be separated or changed by pressure and handling.
• Describe how soil is made from smaller particles and organic matter.