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What does a student learn in ?

This is the year science becomes something students actually test, not just read about. Students ask a real question, plan a simple investigation, and use what they find to explain how the world works. They look at forces and motion, living things and their habitats, and patterns in weather and the sky. By spring, students can run a small experiment, record what happened, and explain the results using their own data.

  • Asking questions
  • Simple experiments
  • Forces and motion
  • Habitats and animals
  • Weather patterns
  • Engineering design
Source: Illinois Illinois Learning Standards
Year at a glance
How the year usually goes. Every school and district set their own curriculum, so treat this as a guide, not official pacing.
  1. 1

    Thinking like a scientist

    Students start the year learning how to ask testable questions, plan small investigations, and record what they notice. Expect them to come home talking about patterns they spotted and reasons they think something happened.

  2. 2

    Forces, motion, and energy

    Students push, pull, and watch how objects move. They explore how energy shows up as heat, light, and sound, and they look at how waves carry sound from one place to another.

  3. 3

    Living things and their habitats

    Students study how plants and animals grow, what they need to survive, and how traits pass from parents to offspring. They compare animals in different habitats and notice what helps each one fit in.

  4. 4

    Earth, weather, and people

    Students track weather patterns, look at how land and water shape the planet, and think about how people affect rivers, soil, and air. They also learn how communities prepare for storms and other natural hazards.

  5. 5

    Designing and testing solutions

    Students end the year as young engineers. They name a real problem, sketch a possible fix, build a simple version, and improve it after testing. Expect taped-together prototypes and stories about what worked and what flopped.

Mastery Learning Standards
The required skills a student should display by the end of Grade 3.
Science and Engineering Practices
  • Asking Questions and Defining Problems

    Students practice turning everyday curiosity into testable questions. They learn to spot the difference between a question science can investigate and a problem an engineer might solve.

  • Developing and Using Models

    Students draw, build, or act out models to show how something in nature works or how a design solves a problem. The model helps them explain what they observe and test their thinking.

  • Planning and Carrying Out Investigations

    Students plan a simple test, collect information from it, and use what they find to check whether their idea holds up.

  • Analyzing and Interpreting Data

    Students look at collected data, such as temperature readings or plant growth measurements, and find patterns that help explain what happened in an experiment.

  • Mathematics and Computational Thinking

    Students use counting, measuring, or simple math to help explain what they observed in a science investigation. Numbers make patterns and results easier to see and compare.

  • Constructing Explanations

    Students take what they observed or measured and write an explanation for why it happened, using that evidence to back up their thinking.

  • Engaging in Argument from Evidence

    Students look at two different explanations for the same thing, then use what they observed or tested to argue which one holds up better.

  • Communicating Information

    Students read about science topics and share what they learned, using drawings, words, or charts. They also check whether information they find is accurate before passing it on.

Physical Science
  • Matter and Interactions

    Students examine what everyday materials are made of and how those materials behave, change, or interact with each other. This builds toward explaining why ice melts, why some things dissolve in water, and how matter behaves in the physical world.

  • Motion and Stability

    Students test how pushes and pulls make objects speed up, slow down, or change direction. They learn that a harder push moves something farther, and that balanced forces keep an object still.

  • Students explore how energy moves and changes form, like heat traveling from a hot pan to a cold room or light turning into warmth from the sun. They learn that energy shifts from place to place but is never lost.

  • Waves and Information

    Students explore how waves carry energy and information from one place to another. They look at examples like sound, light, and water ripples to understand how waves move and how people use them to send signals.

Life Science
  • Structures and Processes

    Students learn how living things are built and how they work, from the tiny cells inside them to the larger systems those cells form. They look at real examples to see how structure and function connect.

  • Ecosystems

    Students trace how energy from the sun moves through a food chain and how nutrients cycle back into the soil. They also look at how plants, animals, and other organisms depend on each other to survive.

  • Students look at family traits like eye color, hair texture, or plant leaf shape to figure out which ones get passed down from parents to offspring and which ones vary from one generation to the next.

  • Biological Evolution

    Students look at how living things are alike and how they differ, then explore why those differences matter for survival over time.

Earth and Space Science
  • Earth's Place in the Universe

    Students learn where Earth sits in the solar system and how it moves around the sun. They also look at patterns in how planets and moons travel and explore evidence about Earth's long history.

  • Earth's Systems

    Students learn how Earth's land, water, air, and living things connect and affect one another. They look at how a rainstorm fills a river, how soil supports plants, and how those systems push and pull on each other.

  • Earth and Human Activity

    Students explore how things people do (like building roads or burning fuel) change the land, water, and air around them. They also look at how storms, floods, and other natural events affect where and how people live.

Engineering, Technology, and Applications of Science
  • Engineering Design

    Students identify a real problem, sketch or build a solution, then test it and improve it based on what they learn. The goal is a design that works better each time they try.

  • Links Among Engineering, Technology, and Society

    Students explore how inventions change daily life and how the needs of everyday life push engineers to build new things. A new tool can reshape a community, and a community's problems can spark the next invention.

No state assessments at this grade
Students take their next one in Grade 4.
National Monitoring

NAEP (National Assessment of Educational Progress)

Federally administered sample-based assessment in reading, mathematics, science, and writing. NAEP results inform state-by-state comparisons rather than individual student or school accountability.

When given:
biennial in winter
Frequency:
every two years
Official source
Common Questions
  • What kind of science will students do this year?

    Students ask real questions and run small experiments to find answers. They study forces and motion, living things and habitats, weather and the planet, and they try simple engineering challenges like building something that solves a problem.

  • How can I help with science at home?

    Pay attention to questions students ask about how things work, then look for the answer together. A walk outside, a kitchen experiment, or watching what a pet does all count. Asking why and how matters more than knowing the right answer.

  • Does science homework need fancy materials?

    No. Cups, water, ice, paper, tape, rubber bands, magnets, and rocks from the yard are plenty. The point is to notice patterns and explain what happened, not to buy a kit.

  • How should I sequence the units across the year?

    Most teachers anchor each quarter in one big strand: physical science, life science, earth science, and an engineering project. Weave the practices like asking questions, planning investigations, and arguing from evidence into every unit instead of teaching them on their own.

  • Which practices usually need the most reteaching?

    Planning a fair test and arguing from evidence are the hardest. Students often jump to a conclusion before checking the data. Short, repeated practice with sentence frames like I think this because helps more than one big lesson.

  • What should students be able to do by the end of the year?

    Students should ask a testable question, plan a simple investigation, record what they see, and explain results using evidence. They should also be able to read a short science article and pull out the main idea.

  • My child says science is just memorizing facts. Is that right?

    No. Most of the year is about doing science, not memorizing it. Students gather evidence, draw models, and explain what they think is happening. Knowing some vocabulary helps, but reasoning from what they observe matters more.

  • How do I know students are ready for next year?

    Look for students who can design a simple test, collect data without prompting, and back up a claim with what they saw. If they can sketch a model that shows how something works and revise it after new evidence, they are ready.