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Public learning track
Cells and the Five Kingdoms of Life
3rd Grade · Track 91 of 447 · 7 lessons
7 lessons
Goal
Identify cells as the foundational units of life, explain biological organization from cells to organisms, and distinguish among the major kingdoms.
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Living, Nonliving, and Once-Living Things
Public learning track
Earth Materials: Rocks, Minerals, Soil, and Fossils
3rd Grade · Track 92 of 447 · 10 lessons
10 lessons
Goal
Compare minerals and rocks, analyze soil composition, explore fossil formation, and identify Earth materials as natural resources.
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How Are Rocks, Soils and Minerals Different?
Public learning track
Nutrition, Nutrients, and Healthy Eating Habits
3rd Grade · Track 93 of 447 · 7 lessons
7 lessons
Goal
Analyze the major nutrients in food, evaluate balanced meal designs, and understand how dietary choices impact human growth and health.
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Macronutrients: Proteins, Carbohydrates, and Lipids
Public learning track
Physical Properties of Matter and Materials
3rd Grade · Track 94 of 447 · 8 lessons
8 lessons
Goal
Identify and test physical properties of materials to classify them and evaluate their suitability for real-world engineering and functional uses.
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Distinguishing Objects from the Materials They Are Made Of
Public learning track
Scientific Questioning, Hypotheses, and Problem Definition
3rd Grade · Track 95 of 447 · 5 lessons
5 lessons
Goal
Learners will pose testable questions, formulate clear hypotheses based on observable patterns, and define engineering problems using background research.
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Asking Testable vs. Non-Testable Questions
Public learning track
Microorganisms, Pathogens, and Immune Defense
3rd Grade · Track 96 of 447 · 6 lessons
6 lessons
Goal
Identify different categories of infectious pathogens, their transmission mechanisms, and the protective roles of hygiene, sanitation, vaccines, and the immune system.
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Pathogen Types: Viruses, Bacteria, Fungi, and Parasites
Public learning track
Planning Fair Tests, Variables, and Lab Safety
3rd Grade · Track 97 of 447 · 5 lessons
5 lessons
Goal
Learners will design fair test investigations, control variables, write repeatable procedures, and follow laboratory safety protocols.
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Identifying Independent, Dependent, and Controlled Variables
Public learning track
Plant Structures, Transport, and Reproduction
3rd Grade · Track 98 of 447 · 8 lessons
8 lessons
Goal
Analyze plant anatomy, internal vascular transport, growth needs, and reproductive cycles in flowering and non-flowering plants.
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Structures of Flowering Plants: Roots, Stems, and Leaves
Public learning track
States of Matter and Thermal Phase Changes
3rd Grade · Track 99 of 447 · 8 lessons
8 lessons
Goal
Explain the characteristics of solids, liquids, and gases using particle behavior and trace how thermal energy drives phase changes.
Public learning track
Weather Systems, Meteorology, and Severe Hazards
3rd Grade · Track 100 of 447 · 10 lessons
10 lessons
Goal
Measure weather variables with instruments, analyze seasonal patterns across locations, and apply severe weather safety protocols.
Featured Diagrams
Weather Tools: Thermometers, Wind Vanes, and Rain Gauges