6 units · 24 lessons

Grade 3: Science

Start with a unit whose prerequisites fit. Work through the lessons, use the study guide to review, and try the new cases before continuing.

  1. Unit 1 · 4 lessons

    Life Cycles and Traits

    Compare organism stages and explain inherited and environmental differences.

    Before you begin: Read or listen to supplied scientific descriptions and follow a labeled diagram. · Use addition, subtraction and the stated measurement units.

  2. Unit 2 · 4 lessons

    Habitats, Adaptation and Change

    Use environment records to reason about survival without purposeful evolution claims.

    Before you begin: Read or listen to supplied scientific descriptions and follow a labeled diagram. · Use addition, subtraction and the stated measurement units.

  3. Unit 3 · 4 lessons

    Weather, Climate and Hazard Planning

    Distinguish weather records, seasonal patterns and safe preparation.

    Before you begin: Read or listen to supplied scientific descriptions and follow a labeled diagram. · Use addition, subtraction and the stated measurement units.

  4. Unit 4 · 4 lessons

    Forces and changes in motion

    Build force diagrams, combine opposite forces, and explain motion with a stated model.

    Before you begin: Compare numbers; add and subtract whole numbers.

  5. Unit 5 · 4 lessons

    Magnets and Noncontact Forces

    Distinguish attraction, repulsion and evidence from supplied models.

    Before you begin: Read or listen to supplied scientific descriptions and follow a labeled diagram. · Use addition, subtraction and the stated measurement units.

  6. Unit 6 · 4 lessons

    Engineering Tests and Tradeoffs

    Choose a design using clear requirements and complete test records.

    Before you begin: Read or listen to supplied scientific descriptions and follow a labeled diagram. · Use addition, subtraction and the stated measurement units.

Check what you can explain

The subject test uses additional supplied cases across these units. Its feedback links back to the relevant lessons. Use it to plan practice; a score on these questions is not a school grade or proof of complete subject mastery.

Open the subject test