G1 Science K123
Learn the integrated Science course through reviewed topic journeys and the required practical skills.
Learning goals
- Forms of energy
- Direction of thermal transfer
- Conservation of energy
- Power
- Fossil-fuel electricity generation
- High-voltage transmission
- Step-up and step-down transformers
- Circuit diagrams and components
- Series and parallel arrangements
- Using a multimeter
- Current in series
- Potential difference in series
- Resistance in series
- Current in parallel
- Potential difference in parallel
- Resistance in parallel
- Household parallel wiring
- Appliance ratings
- Electrical power
- Cost in kilowatt-hours
- Reading an electricity bill
- Reducing electrical-energy wastage
- Generating waves
- Energy transfer by waves
- Amplitude, frequency and wavelength
- Radio waves
- Microwaves
- Infrared
- Light
- Ultraviolet
- X-rays
- Gamma rays
- Measuring length
- Measuring time
- Changing shape or size
- Changing rest or motion
- Turning effect
- Meaning of speed and acceleration
- Average speed
- Acceleration
- Distance–time graphs
- Moment of a force
- Requirements for plant growth
- Why production must improve
- Fertilisers
- Pesticides and herbicides
- Slash-and-burn
- Fertiliser pollution
- Pesticide and herbicide pollution
- Slash-and-burn damage
- Biological control
- Improved varieties
- Intensive farming
- Uses of plant hormones
- Measuring volume
- Dissolving
- Filtration
- Evaporation
- Distillation
- Paper chromatography
- Everyday uses of separation
- Chemical reactions
- Slowing food decay
- Slowing cooking and burning
- Slowing rusting
- Indicators
- Measuring pH
- The pH scale
- Acid and metal
- Acid and base
- Acid and carbonate
- Neutralisation
- Microbes
- Microbial action on food
- Reducing microbial activity
- Lowering pH
- Reducing oxygen
- Reducing water
- Using high temperature
- Using low temperature
- Preservatives
- Nutritional supplements
- Texture and appearance modifiers
- Active lifestyle
- Balanced diet
- Sufficient rest
- Good hygiene
- Meaning of balanced diet
- Roles of nutrients
- Calculating and interpreting BMI
- Undereating and over-exercising
- Fracture and osteoporosis
- Cartilage and ligament
- Arthritis, dislocation and sprain
- Reducing bone and joint risk
- Bacterial and viral diseases
- Antimicrobial agents
- Completing antibiotics
- Vaccination
- Hereditary conditions
- Limits of organ-support technology
- Importance of digestion
- Digestive organs and their functions
- Enzyme action and optima
- Interpreting enzyme-rate data
- Constipation
- Alcohol and the liver
- Diabetes risk
- Breathing and respiration
- Respiratory parts and functions
- Inhaled and exhaled air
- Carbon-dioxide test
- Water-vapour test
- Choking
- Smoking and passive smoking
- Components of blood
- Plasma
- Platelets
- Red blood cells
- White blood cells
- Heart–lung blood pathway
- Vessel structure and function
- Circulatory measurements
- Response to physical activity
- Plaque, heart attack and stroke
- Circulatory risk factors
- Measurements of length, mass, temperature, time interval, volume of liquids/solids and force (e.g. weight) using appropriate instruments
- Determination of average speed of an object
- Measurements of current, voltage and resistance using multimeter
Start learning
Begin with Topic 1 and follow its guided lesson sequence.
Other ways to start
Find my starting point
Check eight ideas across the integrated course and get a focused place to begin.
Machines Around Us (II)
Energy
Energy does not vanish. Follow it from the input to every output, including the energy transferred to the surroundings.
Electricity
A circuit is a complete set of connections. The way components are connected determines the current, voltage and resistance.
Wave
A vibration produces a travelling disturbance. The wave carries energy; when a material carries the wave, its particles move around their own positions rather than travelling with the wave overall.
Effects of Force
Look for the effect of the force: a change in motion, shape, size or turning.
Food Matters
Sources of Food
Food production improves only when the actual limiting need is addressed, and every method must be judged by both benefit and cost.
Food Chemistry
Choose a separation method from the properties of the substances and the product you need—not from a memorised list.
Food Safety
Food preservation works by making conditions less suitable for microbes; it does not automatically make food sterile.
Our Body and Health (II)
Staying Healthy
Health depends on several interacting factors. Use measurements as evidence, not as a complete diagnosis of a person.
Digestion
Digestion changes large insoluble food substances into smaller soluble substances that can be absorbed.
Breathing
Breathing moves air; respiration releases usable energy inside cells. The two are linked by gas exchange and transport.
Blood Circulation
Blood links the lungs, digestive system and body cells by transport. Its components, vessels and pump are each suited to a different part of that job.
Practical requirements
Practical requirements
Choose measuring instruments, determine average speed and use a multimeter safely.
Practice and continue learning
- Continue learning — Resume the next lesson or practice task saved on this device.
- Topic checks — Open a topic from the roadmap and check its connected lesson ideas.
- Paper 1 mock — Run a 75-minute platform-constrained e-examination with the official 50-mark section structure.
- Paper 2 mock — Run a 60-minute platform-constrained short-answer and structured-response paper worth 50 marks.
About this course
K123 integrated Science · 2027
The 2027 G1 Science K123 course across Machines Around Us, Food Matters, and Our Body and Health, organised into reviewed lesson journeys.
G1 Science is one integrated course. Physics, Chemistry and Biology ideas are taught through the same three contexts rather than as separate qualifications.
Paper 1 is a 1 h 15 min e-examination worth 50%; Paper 2 is a 1 h written paper worth 50%.
Reviewed 9 Aug 2026
Questions about this course
Where should I start?
Begin with Topic 1 if you are new to the course. Each topic has a reviewed lesson sequence and a topic check.
Are Physics, Chemistry and Biology separate G1 courses?
No. K123 is one integrated Science course, so this roadmap keeps all eleven topics together.
What if I have already started the course?
Open your saved G1 learning plan or choose the topic your teacher is currently teaching.
Review
Review: G1 Science K123
Cumulative review of previously studied course topics.
About 10 minutes
Review
Review questions from topics you have studied in this course. Use the result to decide what to review; this check does not prove mastery.
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Recent attempts
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Beyond the syllabus: optional enrichment that does not count towards your progress.
How this activity affects progress
Course and syllabus information
- Course
- SEC G1 Science
- Edition
- SEC G1 Science 2027