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Public learning track
Matter: Properties and Reconfigurable Structures
2nd Grade · Track 70 of 447 · 9 lessons
9 lessons
Goal
Classify materials by observable properties, test their physical traits, and build complex structures from smaller interchangeable units.
Featured Diagrams
Observing and Sorting Solids, Liquids, and Gases
Public learning track
Investigating Physical Changes and States of Matter
2nd Grade · Track 71 of 447 · 9 lessons
9 lessons
Goal
Differentiate between reversible state changes and irreversible physical alterations through heating, cooling, and mechanical forces.
Featured Diagrams
Reshaping Matter by Cutting, Folding, and Sanding
Public learning track
Properties of Water, Air, and Dissolving
2nd Grade · Track 72 of 447 · 9 lessons
9 lessons
Goal
Investigate atmospheric and fluid phenomena including air volume, surface tension, buoyancy, and solution separation.
Featured Diagrams
Proving Air Occupies Space and Has Mass
Public learning track
Forces, Pushes, Pulls, and Friction in Motion
2nd Grade · Track 73 of 447 · 9 lessons
9 lessons
Goal
Investigate how balanced and unbalanced contact forces, friction, collisions, and gravity alter the motion and shape of objects.
Featured Diagrams
Identifying Push and Pull Contact Forces
Public learning track
Sound Energy: Vibrations, Pitch, and Volume
2nd Grade · Track 74 of 447 · 9 lessons
9 lessons
Goal
Explain how vibrating matter produces sound, propagates through media, and how vibration rate and size govern pitch and volume.
Featured Diagrams
Vibrations Make Sound: Tuning Forks and Drums
Public learning track
Light Energy: Shadows and Refraction
2nd Grade · Track 75 of 447 · 9 lessons
9 lessons
Goal
Investigate straight-line light propagation, shadow formation factors, reflection from flat mirrors, and refraction through lenses and water.
Featured Diagrams
Light Sources: Natural and Artificial Illuminators
Public learning track
Heat Energy: Conduction and Insulation
2nd Grade · Track 76 of 447 · 9 lessons
9 lessons
Goal
Investigate thermal conduction, temperature balance, and design thermal barriers to slow heat loss.
Featured Diagrams
Identifying Thermal Energy Sources and Friction Heat
Public learning track
Magnetism, Static Electricity, and Circuits
2nd Grade · Track 77 of 447 · 9 lessons
9 lessons
Goal
Test magnetic poles and orientation, explore static charges, build complete electric circuits, and classify electrical conductors.
Featured Diagrams
Exploring Magnetic Attraction and Ferrous Metals
Public learning track
Plant Anatomy, Water Transport, and Growth
2nd Grade · Track 78 of 447 · 9 lessons
9 lessons
Goal
Identify plant organs, investigate water and nutrient transport, examine flower reproduction, and determine seed germination requirements.
Featured Diagrams
Structures of Flowering Plants: Roots, Stems, and Leaves
Public learning track
Animal Classification and Life Cycles
2nd Grade · Track 79 of 447 · 9 lessons
9 lessons
Goal
Classify vertebrates into five major groups, contrast vertebrate traits with invertebrates, and model diverse animal life cycles.
Featured Diagrams
Vertebrates Versus Invertebrates: Backbone Classification