Grade 3 · Science

Third Grade Science

40 structured lessons. Lessons are grouped by subtopic. Completed lessons show a ✅ so you can continue fast.

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🎒 Third Grade🧪 Science📚 40 lessons✅ Completed: 0/40
life cyclesecosystemsEarth & spacematter & energyhealth & safety
Lessons 1–8

🟢 Living Things

Follow in order (recommended)

  • 01Plant Life CyclesNextFree
  • 02Animal Life Cycles🔒
  • 03Food Chains And Ecosystems🔒
  • 04Adaptations In Animals🔒
  • 05How Humans Affect Nature🔒
  • 06Protecting Endangered Species🔒
  • 07Classifying Living Things🔒
  • 08Observing Habitats Around Us🔒
Lessons 9–16

🔵 Earth & Space

Follow in order (recommended)

  • 09Layers Of The Earth🔒
  • 10Rocks And Minerals🔒
  • 11Natural Resources And Conservation🔒
  • 12Water Cycle Review🔒
  • 13Weather Instruments🔒
  • 14Phases Of The Moon🔒
  • 15Day And Night Rotation🔒
  • 16Solar System Basics🔒
Lessons 17–24

🟡 Matter and Energy

Follow in order (recommended)

  • 17Physical And Chemical Changes🔒
  • 18States Of Matter In Action🔒
  • 19Heat Light And Sound Energy🔒
  • 20Simple Electric Circuits🔒
  • 21Magnetic Forces🔒
  • 22Renewable And Nonrenewable Energy🔒
  • 23Experiment Safety🔒
  • 24Mini Science Experiments🔒
Lessons 25–32

🟣 Human Body & Health

Follow in order (recommended)

  • 25Body Systems Overview🔒
  • 26Circulatory And Respiratory Systems🔒
  • 27Balanced Diet And Nutrients🔒
  • 28Exercise And Fitness Habits🔒
  • 29Germ Prevention And Hygiene🔒
  • 30Importance Of Sleep🔒
  • 31Emotional Health Awareness🔒
  • 32Safety Indoors And Outdoors🔒
Lessons 33–40

🟠 Science Projects

Follow in order (recommended)

  • 33Build A Model Habitat🔒
  • 34Create A Mini Weather Station🔒
  • 35Experiment With Magnets🔒
  • 36Observe Moon Changes🔒
  • 37Make A Simple Electric Device🔒
  • 38Recycle And Reuse Project🔒
  • 39Prepare A Science Journal🔒
  • 40Science Fair Presentation🔒

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