
Public learning track
Human Body Systems and Mechanics
3rd Grade · Science · Open Global Science
9 lessons
Goal
Explain the major structures, biomechanics, and physiological functions of human body systems.
Featured Diagrams
The Skeletal System: Bones, Protection, and Joints
9 lessons
0 of 9 done
- 1The Skeletal System: Bones, Protection, and JointsUp nextStart
- 2The Muscular System and BiomechanicsPremiumNot started yet
- 3The Integumentary System: Skin Protection and TemperatureNot started yet
- 4The Digestive System: Breaking Down Food and Absorbing NutrientsNot started yet
- 5The Circulatory System: Heart, Blood, and VesselsNot started yet
- 6The Respiratory System: Breathing and Gas ExchangeNot started yet
- 7The Urinary and Excretory System: Waste and Fluid BalanceNot started yet
- 8The Nervous System: Brain, Spinal Cord, and Reflex ArcsNot started yet
- 9The Endocrine and Reproductive Systems: Hormones and GrowthNot started yet
Curriculum Framework
3rd Grade · Science · Open Global Science
1
7 lessons
Cells and the Five Kingdoms of Life
Identify cells as the foundational units of life, explain biological organization from cells to organisms, and distinguish among the major kingdoms.
2
8 lessons
Plant Structures, Transport, and Reproduction
Analyze plant anatomy, internal vascular transport, growth needs, and reproductive cycles in flowering and non-flowering plants.
3
4 lessons
Fungi, Mushrooms, and Decomposers
Examine fungal structure, nutritional strategies, mushroom identification safety, and the essential role of decomposers in nutrient cycles.
4
6 lessons
Animal Diversity, Adaptations, and Diets
Classify invertebrates and vertebrates, compare dietary adaptations, life cycles, and thermoregulation mechanisms.
5
9 lessons
Human Body Systems and Mechanics
Explain the major structures, biomechanics, and physiological functions of human body systems.
6
8 lessons
Ecosystems, Energy Flow, and Living Relationships
Investigate terrestrial and aquatic habitats, construct food webs, and analyze interactions including symbiosis, predation, and camouflage.
7
5 lessons
Heredity, Genes, and Environmental Traits
Explain how genetic material carries inherited traits across generations, contrast cell division types, and analyze gene-environment interactions.