Grade 3 Science Worksheets

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 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 Earth’s rotation causes day and night
• Describe how different sides of Earth face the Sun during its spin
• Recognize that the daily cycle is caused by Earth’s motion, not the Sun’s motion+ Show more

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

• Describe how xylem and transpiration pull move water through stems to support growth
• Explain how phloem translocation moves sugars to different parts of a plant
• Compare herbaceous and woody stems by vascular bundle arrangement and growth over time+ Show more

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 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

• Understand how predators and prey depend on each other within an ecosystem.
• Identify the effects of changes in prey populations on predator survival.
• Explain the relationship between habitat conditions, food sources, and animal survival.+ Show more

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 why shadows form when objects block light.
• Identify how opaque and transparent materials affect what you can see.
• Use evidence from a diagram to describe where light goes and where shadows form.

Learning Objectives

• Understand how increasing influences affect outcomes.
• Recognize how surface inclines alter the speed of objects.
• Predict effects when multiple influences are applied simultaneously.+ Show more

Learning Objectives

• Use cause-and-effect reasoning to predict how changes in a situation can change outcomes.
• Explain directional influences (increase/decrease) and speed-related consequences using scientific language.
• Compare two scenarios and justify which one will produce a faster, slower, or different result.+ Show more

Learning Objectives

• Understand different state changes of matter when heating or cooling.
• Identify features that indicate whether a sample is solid, liquid, or gas.
• Describe the processes of melting, freezing, evaporation, and condensation.+ Show more

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

• Explain how soil pore size and structure affect water retention and drainage
• Describe how soil aeration influences oxygen supply to plant roots
• Compare loam, clay, and sandy soils using retention, drainage, and aeration+ Show more

Learning Objectives

• Describe how soil, light, water, temperature, and nutrients affect plant germination and growth
• Explain how human practices and environmental stresses can change where plants survive and establish
• Use evidence from scenarios to predict how a change in conditions may affect plant survival

Learning Objectives

• Understand how evidence strengthens scientific explanations and claims.
• Identify different types of evidence used to support claims.
• Connect specific results to reasoning statements through evidence.+ Show more

Learning Objectives

• Identify major stem parts and describe how xylem and phloem help plants transport resources.
• Explain how transpiration pull and sugar translocation support plant growth.
• Contrast herbaceous and woody stems, including vascular bundle arrangement and secondary growth.+ Show more

Learning Objectives

• Identify structural forms (arches, beams, and frames) and describe their typical uses
• Compare how curvature, span, and connections affect strength and stability
• Distinguish compressive and bending behavior in simple structural examples

Learning Objectives

• Describe how forces move from where they act to structural supports through a load path.
• Identify how trusses, beams, and columns share axial forces, shear, and bending moments.
• Explain how supports and foundations accept combined loads to help structures stay stable.

Learning Objectives

• Identify how material properties such as density, stiffness, tensile strength, compressive strength, brittleness, and corrosion resistance affect structural stability.
• Match common construction materials to key property descriptions and choose the best material for a given load or environment.
• Explain, using evidence from a short passage, how material choice involves trade-offs among strength, durability, weight, and cost.

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

• Identify the main components of soil: mineral particles, organic matter, water, and air.
• Describe how sand, silt, and clay particle sizes affect soil texture and drainage.
• Explain how organic matter and pore space relate to aeration and nutrient availability.+ Show more

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

• Understand how water moves through different soil types and landscapes.
• Identify processes such as infiltration, percolation, capillary rise, and runoff.
• Explain how soil texture and structure affect water distribution and drainage.+ Show more

Learning Objectives

• Understand the stages of a plant's life cycle from seed to adult.
• Identify the importance of water, air, and light in plant growth.
• Describe how adult plants produce seeds to continue the cycle.+ Show more

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.

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

• Explain how friction is a resistive force that can slow or stop moving objects.
• Compare sliding versus rolling to describe differences in friction effects.
• Predict how different surface textures and materials change how easily an object moves.+ Show more

Learning Objectives

• Understand how organisms change as they grow.
• Identify the different needs of young and adult organisms.
• Describe how size, structures, and behaviors relate to survival needs.+ Show more

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

• 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

• Describe how human actions can change soil quality over time
• Identify ways soil erosion, compaction, and nutrient loss can happen
• Explain how conservation practices help protect soil health+ Show more

Learning Objectives

• Understand the main stages of metamorphosis in animals.
• Identify the characteristics of each stage in a life cycle.
• Explain how stage changes help animals meet their needs.+ Show more

Learning Objectives

• Define force as a push or a pull
• Explain how a force can change an object's speed or direction
• Distinguish between contact forces and non-contact forces in everyday examples+ Show more

Learning Objectives

• Explain that organisms go through distinct life cycle stages (such as germination, growth, and adulthood).
• Describe how an organism’s needs change from one life cycle stage to another.
• Use examples to connect life cycle stages to how populations continue from one generation to the next.

Learning Objectives

• Identify design choices that improve strength and stability in simple structures
• Explain how intended function, load paths, supports, and span affect structural performance
• Describe common failure modes such as buckling, tension fracture, and joint slippage+ Show more

Learning Objectives

• Identify how rigid and pin connections affect stiffness and movement in structures
• Explain how fasteners and adhesives transfer loads through joints
• Describe how joint geometry and bearing area can change stress concentration+ Show more

Learning Objectives

• Explain how faster and slower vibrations affect perceived pitch
• Describe how stronger vibration motions relate to loudness
• Match vocabulary terms to definitions about sound and vibrations+ Show more

Learning Objectives

• Explain how living things in a simple ecosystem are connected through food and habitat needs.
• Identify producers, consumers, and predators/prey relationships in a shared habitat.
• Describe how animals and plants affect each other through seed spreading and growth.

Learning Objectives

• Identify the main parts of vascular plants: roots, stems, leaves, and flowers.
• Describe how roots, stems, leaves, and flowers help plants grow and reproduce.
• Connect specific structures (like taproots and woody stems) to their functions.+ Show more

Learning Objectives

• Define prototype and explain why testing is used
• Identify evidence from prototype tests (strength, fit, stability, function)
• Compare test results with the intended goal and describe how designs improve+ Show more

Learning Objectives

• Identify the main stages of metamorphosis in insects: egg, larva, pupa, and adult.
• Explain how each stage’s body form helps an organism meet its needs.
• Use vocabulary (larva, pupa, adult) to describe life cycle changes.

Learning Objectives

• Understand what a habitat is and how it provides shelter for living things.
• Identify different types of habitats and their resources.
• Describe how habitats support the needs of organisms like water, shelter, and food.+ Show more

Learning Objectives

• Understand how test results provide evidence for improving designs.
• Learn how small adjustments can change performance in measurable ways.
• Identify different types of design changes such as shape, support, and materials.+ Show more

Learning Objectives

• Identify major life cycle stages of common organisms and explain what happens in each stage.
• Describe how needs (food, shelter, and environment) can change from a young stage to an adult stage.
• Explain how life cycles help populations continue from one generation to the next.

Learning Objectives

• Use qualitative cause-and-effect reasoning to predict what happens when an influence changes
• Describe how slope and added influences affect the speed and direction of an object’s motion
• Explain predictions using clear directional and comparative language

Learning Objectives

• Explain how changing one influence affects an outcome using qualitative cause-and-effect reasoning
• Predict how slope incline and additional influences change the speed and direction of motion
• Use comparisons (greater/less) to justify predictions about resistive interactions