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Force and motion
Connect position, speed, velocity, acceleration, net force, mass, inertia, and Newton's laws of motion.
Read lessonSubject Curriculum & Practice
General Science
Connect everyday observations with accurate scientific ideas about motion, energy, matter, cells, body systems, plants, and ecosystems.
10 structured lessons 10 topic assessments
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Curriculum Overview & Recommended Progression
The General Science curriculum is organized systematically from baseline conceptual definitions to advanced practical applications. For optimal learning retention:
1. Conceptual Study
Read each lesson thoroughly, focusing on key definitions, worked demonstrations, and highlighted common mistakes.
2. Active Assessment
Immediately complete the paired topic quiz to test your active recall and diagnose misconceptions using instant feedback.
3. Progressive Mastery
Follow the recommended sequence below before tackling specialized topics or related subject intersections.
Start here
Core foundations
Begin with these foundational topics to establish core mental models, then continue through the remaining curriculum.
Lesson
Work and energy
Understand mechanical work, kinetic and potential energy, power, and energy transformations.
Read lessonLesson
Heat, light, and electricity
Master temperature, thermal transfer mechanisms, wave optics, electric potential, current, resistance, and circuit configurations.
Read lessonLesson
Matter, atoms, and molecules
Connect states of matter with particles and distinguish atoms, elements, molecules, and compounds.
Read lesson
All topics in General Science
Lesson
Elements, compounds, acids, and bases
Distinguish pure substances and mixtures, then understand basic acid-base behavior and pH.
Read lessonLesson
Cells and the organization of life
Understand cells as the basic units of life and connect organelles, tissues, organs, and systems.
Read lessonLesson
Nutrition and human body systems
Connect nutrients, digestion, circulation, respiration, excretion, and coordinated body function.
Read lessonLesson
Plants and photosynthesis
Understand how plants capture light energy, exchange gases, transport materials, and grow.
Read lessonLesson
Ecosystems and the environment
Connect organisms, energy flow, biogeochemical cycles, population dynamics, trophic cascades, and environmental resilience.
Read lessonLesson
Sound and waves
Connect vibrations with sound waves, frequency, pitch, amplitude, intensity, reflection, speed, and hearing safety.
Read lesson
Topic Assessments
Check your understanding
General Science · Force and motion
Force, energy, and electricity practice
Apply foundational ideas about net force, acceleration, work, energy, heat transfer, light, and circuits.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
General Science · Matter, atoms, and molecules
Matter and chemistry practice
Distinguish atoms, molecules, elements, compounds, mixtures, physical changes, acids, bases, and pH.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
General Science · Cells and the organization of life
Cells, bodies, and ecosystems practice
Review cell structures, body-system relationships, photosynthesis, respiration, food webs, and matter cycles.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
General Science · Ecosystems and the environment
Ecosystems and the Environment Quiz
Check ecosystem components, energy flow, matter cycles, populations, limiting factors, food chains, biodiversity, and resilience.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
General Science · Elements, compounds, acids, and bases
Elements, Compounds, Acids, and Bases Quiz
Distinguish elements, compounds, mixtures, physical separation, acid-base behavior, and the logarithmic pH scale.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
General Science · Heat, light, and electricity
Heat, Light, and Electricity Quiz
Check temperature, heat transfer, conduction, convection, radiation, light behavior, circuits, current, and voltage.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
General Science · Nutrition and human body systems
Nutrition and Human Body Systems Quiz
Connect nutrients, digestion, absorption, respiration, circulation, excretion, and coordinated body-system function.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
General Science · Plants and photosynthesis
Plants and Photosynthesis Quiz
Check photosynthesis, chlorophyll, chloroplasts, stomata, water transport, respiration, and plant roles in ecosystems.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
General Science · Work and energy
Work and Energy Quiz
Apply mechanical work, kinetic and potential energy, power, energy transfer, transformation, and conservation.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
General Science · Sound and waves
Sound and Waves Quiz
Check vibrations, mechanical waves, frequency, pitch, amplitude, intensity, speed, reflection, and hearing safety.
- Level
- beginner
- Questions
- 5
- Time
- 5–8 min
