Grade 3 Science Worksheets

Learning Objectives

• Identify evidence that suggests a chemical change may occur when materials are mixed
• Compare the properties of a new product to the expected properties of the starting materials
• Use observations like color, texture, and heat to explain how mixing can create new substances+ Show more

Learning Objectives

• Differentiate between weather and climate using appropriate time scales.
• Identify examples of weather events versus long-term climate patterns.
• Explain why a single day or storm does not automatically change a region’s climate.

Learning Objectives

• Describe the structure and function of stem tissues involved in water and nutrient transport.
• Explain how xylem and phloem work to support plant growth and resource distribution.
• Compare herbaceous and woody stems in terms of structure and growth features.+ Show more

Learning Objectives

• Describe different methods of seed dispersal and their ecological importance.
• Explain how seed morphology and dispersal timing influence plant success.
• Identify how dispersal patterns affect plant populations and habitats.+ Show more

Learning Objectives

• Understand how soil, light, water, temperature, and nutrients affect plant growth.
• Identify human practices that modify landscape and influence plant development.
• Describe how environmental variables impact germination, growth rates, and survival.+ Show more

Learning Objectives

• Describe the major stages of seed germination, including imbibition, radicle emergence, hypocotyl and epicotyl growth, cotyledon function, and true leaf development.
• Explain the role of seed reserves during early growth.
• Compare germination processes in different plants such as beans, corn, and dandelions.+ Show more

Learning Objectives

• Identify the main parts of a flower and their functions.
• Explain how flowers reproduce and produce seeds.
• Describe different pollination methods and traits that attract pollinators.+ Show more

Learning Objectives

• Describe different root structures, including fibrous and taproot systems.
• Explain plant adaptations such as root hairs, mycorrhizal associations, and storage roots.
• Analyze how root architecture influences water and nutrient uptake and plant stability.+ Show more

Learning Objectives

• Identify solids, liquids, and gases from simple everyday examples
• Match each state of matter to its properties
• Sort objects by state and justify choices+ Show more

Learning Objectives

• Identify evaporation, condensation, precipitation, and collection in the water cycle.
• Label a water cycle diagram with correct stage names.
• Explain the Sun’s role in moving water through the cycle.+ Show more

Learning Objectives

• Describe how moisture, corrosion, freeze-thaw cycles, and ultraviolet (UV) light can weaken materials over time.
• Explain how material durability affects strength and stiffness in structures.
• Identify maintenance actions and protective treatments that extend a structure’s reasonable lifespan.+ Show more

Learning Objectives

• Explain how a fair test controls variables to compare prototype designs.
• Identify common failure points and describe what happened during a test.
• Propose targeted design changes based on recorded evidence.+ Show more

Learning Objectives

• Identify material properties that affect strength and stability (density, stiffness, tensile strength, compressive strength, brittleness).
• Compare common construction materials (wood, steel, concrete, and selected polymers) based on key properties.
• Connect material properties to real-world choices for loads, spans, connections, and durability.+ Show more

Learning Objectives

• Explain how an organism’s growth can change its survival needs.
• Identify how young vs. adult stages can require different resources within the same habitat.
• Use evidence from a text to determine main ideas about growth-related changes.

Learning Objectives

• Understand the different layers of soil called horizons.
• Recognize features that indicate horizon development.
• Describe how landscape and vegetation affect soil layers.+ 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 rigid and pin connection types and explain how they influence structural stiffness and stability.
• Describe how nails, bolts, welds, and adhesives transfer load through a joint.
• Explain how joint geometry, bearing area, and fastening method affect stress concentration and possible failure.

Learning Objectives

• Describe the difference between magnetic and contact forces.
• Identify examples of magnetic attraction and repulsion.
• Explain how distance and pole orientation affect magnetic forces.+ Show more

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

• Understand different ways to organize and represent data, such as drawings, tables, and graphs.
• Identify patterns and relationships within data displays like bar graphs and tally tables.
• Create simple data representations with accuracy and appropriate labels.+ Show more

Learning Objectives

• Explain what resistive forces are and how they oppose motion across surfaces.
• Describe how surface texture and material pairings influence ease of movement.
• Identify real-world examples showing the effects of different surfaces on friction.+ Show more

Learning Objectives

• Describe how to compare motions using distance and time information.
• Distinguish steady-speed motion from changing-speed motion using summaries.
• Use relative language and simple ratios to decide which object is faster.+ Show more

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

• Identify the main stages of a flowering plant’s life cycle from seed to new seeds.
• Explain how germination, growth, and reproduction help plants continue their species.
• Describe how plant structures (roots, leaves, stems, flowers, fruit, seeds) support survival in a local environment.

Learning Objectives

• Understand how models are evaluated by comparing evidence to their main ideas.
• Learn how observed results support or challenge scientific explanations.
• Explore examples of model testing, such as shadow shapes and light sources.+ Show more

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

• Understand how Earth's rotation and tilt affect day length across seasons.
• Identify observable changes in sunlight during different times of the year.
• Connect the position of the Sun in the sky with seasonal daylight patterns.+ Show more

Learning Objectives

• Use consistent units to describe how far an object moves
• Measure and compare elapsed time using seconds
• Calculate and compare simple speeds using distance and time+ Show more

Learning Objectives

• Understand what a prototype is and its purpose.
• Identify key criteria used to test prototypes such as strength, fit, stability, and function.
• Learn how to compare test results with design goals to evaluate a prototype.+ Show more

Learning Objectives

• Describe how moisture, corrosion, freeze-thaw cycles, and ultraviolet light can weaken structures over time
• Explain why protective treatments and maintenance help materials last longer
• Use cause-and-effect reasoning to choose materials with compatible durability for a given environment+ Show more

Learning Objectives

• Explain the difference between an opinion and an evidence-supported claim
• Use evidence to support a reasoning statement that answers a question
• Identify how comparisons and repeated observations strengthen explanations+ Show more

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

• Describe how a sloped surface changes an object's tendency to move by comparing the pull that acts along the slope.
• Compare gentle and steep inclines using the idea of “speed tendency” from gravity along the surface.
• Explain how surface features and object motion (rolling or sliding) can change what happens on an incline.

Learning Objectives

• Describe how forces move from where they act to supports through structural members.
• Identify how axial force, bending moment, and shear can appear in beams and trusses.
• Explain what supports and foundations do when they receive combined loads.

Learning Objectives

• Explain that a force is a push or a pull that can change an object’s speed or direction.
• Identify the direction and magnitude of a force in everyday situations.
• Distinguish contact forces and non-contact forces using simple examples.

Learning Objectives

• Understand the basic needs of plants and animals for survival.
• Identify resources plants and animals obtain from their environment.
• Describe how different species meet the same needs using different body structures.+ Show more

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

• Understand how offspring inherit traits from parents.
• Identify observable variations among individuals.
• Interpret data from family traits and trait charts.+ Show more

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

• 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

• Understand how simple forces cause objects to vibrate.
• Learn how vibrations produce sound and how sound travels through media.
• Identify different types of forces and their effects on objects.+ 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

• 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 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 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

• Understand how models represent ideas that are not directly visible.
• Identify different types of models like diagrams, physical representations, and drawings.
• Explain how models show relationships and cause-and-effect connections.+ Show more

Learning Objectives

• Identify the major stages of metamorphosis in monarch/butterflies and frogs
• Explain how an animal’s structures and behaviors change from one stage to the next
• Use science vocabulary related to life cycles to answer questions accurately+ Show more

Learning Objectives

• Describe how conservation practices help keep soil healthy over time
• Identify ways to reduce runoff, erosion, nutrient loss, and chemical pollution
• Explain how vegetation, compost, and buffers can protect water and fertility