Grade 3 Science Worksheets

Learning Objectives

• Describe how weathering, erosion, and deposition change landforms over time
• Identify landform features such as stream channels, valleys, deltas, and hills and connect them to surface processes
• Explain how moving water, wind, and ice can transport soil and sediment+ Show more

Learning Objectives

• Represent daily weather observations using line and bar graphs and simple tables.
• Describe how temperature and precipitation patterns can change across weeks and seasons.
• Interpret how sunlight angle and Earth's tilt relate to seasonal temperature changes.

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

• Describe how infiltration, percolation, capillary rise, and runoff move water through soil
• Explain how soil texture and structure affect how quickly water moves and how long soil stays wet
• Use evidence from soil and land slope to predict where water will collect, drain, or flow on the surface

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

• Explain how a net force can change an object’s speed and/or direction
• Use observations of motion to describe patterns of speeding up, slowing down, and turning
• Match key vocabulary (force, direction, speed, motion) to correct definitions

Learning Objectives

• Explain how climate differs from weather and how climate is described over long time spans.
• Identify typical temperature and precipitation patterns in regional climate descriptions.
• Use regional climate ideas to predict how plants, animals, and people plan for usual conditions.

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

• Describe the main stages in a plant life cycle from seed to adult plant.
• Explain how water and air help a seed during early germination.
• Explain how light helps an adult plant make energy and grow leaves.

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

• 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

• Explain how balanced forces help an object stay at rest.
• Describe what happens when unbalanced forces act on an object.
• Use force-and-motion ideas to interpret everyday situations.

Learning Objectives

• Explain how pitch is connected to the speed of vibrations.
• Explain how loudness is connected to the strength of vibrations.
• Use examples (strings, drums) to distinguish pitch from loudness.

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

• 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

• Explain how to compare two solutions using the same criteria and constraints.
• Identify observable evidence that shows which solution meets criteria better.
• Describe which features likely caused a solution to perform better or worse.+ Show more

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

• Identify how speed changes over time using distance measurements at regular intervals
• Explain the difference between constant speed and changing speed patterns
• Use a distance-over-time pattern to make predictions about future positions

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

• 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 how different beaks, teeth, and mouthparts help animals get specific types of food.
• Describe how feeding structures support survival and growth in an animal’s habitat.
• Identify examples of how diet differences lead to different body structures for feeding.

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

• 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

• 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 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

• Identify temperature, precipitation, and wind as key daily weather observations
• Use weather words to describe conditions for different days
• Compare daily weather data to find simple patterns over several days+ Show more

Learning Objectives

• Explain how warm temperatures can increase evaporation and water vapor in the air
• Describe how cooling air can cause condensation and the formation of clouds
• Identify how precipitation happens when cloud droplets combine and become heavy+ Show more

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
• Describe how particle size and organic matter affect soil
• Explain how rocks break and how soil forms over time+ Show more

Learning Objectives

• Identify properties of rocks and soil that make them useful in different places
• Explain why a material is chosen for a specific human or environmental use
• Compare how rocks and soil behave in simple situations

Learning Objectives

• Identify common simple machines and describe what each one changes about force or direction of motion
• Compare effort and force needs for different simple machines such as levers, pulleys, and inclined planes
• Use information about a machine to predict how it helps people do work

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 an organism’s growth can change its survival needs.
• Explain how young animals and adult animals may require different resources.
• Identify examples of changing behaviors as organisms develop.

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 the main stages of metamorphosis: egg, larva, pupa, and adult.
• Explain how body form changes during metamorphosis to fit different needs.
• Describe how adult animals may require different resources than larvae.+ 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

• 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

• 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

• Sequence the main stages in a plant life cycle from seed to adult plant.
• Explain how water and air help early germination and root growth.
• Describe how light supports energy-making and leaf growth as the plant develops.+ Show more

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

• 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

• Explain that sound is made by vibrating objects
• Describe how a vibrating object transfers energy to a medium that carries sound
• Identify examples of sound sources such as stretched strings and struck surfaces+ 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 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