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Photosynthesis
Grade 7 - Science
Key Points
- Occurs mainly in leaves (mesophyll cells)
- Chloroplasts contain chlorophyll pigment
- Light reaction happens in thylakoids
- 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
Olympiad Fact
Photosynthesis produces ~115 billion tonnes of biomass per year on Earth.
The Water Cycle
Grade 4 - Science
Key Points
- Evaporation: sun heats water into vapour
- Condensation forms clouds from vapour
- Precipitation: rain, snow, hail fall down
- Collection in oceans, lakes and rivers
Olympiad Fact
Earth recycles the same water — about 97% of it sits in the oceans.
Electricity & Circuits
Grade 6 - Science
Key Points
- Current needs a closed circuit to flow
- Conductors allow flow, insulators block it
- A switch opens or closes the circuit
- Cells in series add up their voltage
Olympiad Fact
Lightning heats the air around it to ~30,000°C — hotter than the Sun’s surface.
Light & Shadows
Grade 6 - Science
Key Points
- Light travels in straight lines
- Opaque objects form shadows
- Transparent materials let light through
- Shadows grow when source moves closer
Olympiad Fact
Sunlight takes about 8 minutes 20 seconds to reach the Earth.
Photosynthesis
Grade 7 - Science
Key Points
- Occurs mainly in leaves (mesophyll cells)
- Chloroplasts contain chlorophyll pigment
- Light reaction happens in thylakoids
- 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
Olympiad Fact
Photosynthesis produces ~115 billion tonnes of biomass per year on Earth.
The Water Cycle
Grade 4 - Science
Key Points
- Evaporation: sun heats water into vapour
- Condensation forms clouds from vapour
- Precipitation: rain, snow, hail fall down
- Collection in oceans, lakes and rivers
Olympiad Fact
Earth recycles the same water — about 97% of it sits in the oceans.
Electricity & Circuits
Grade 6 - Science
Key Points
- Current needs a closed circuit to flow
- Conductors allow flow, insulators block it
- A switch opens or closes the circuit
- Cells in series add up their voltage
Olympiad Fact
Lightning heats the air around it to ~30,000°C — hotter than the Sun’s surface.
Light & Shadows
Grade 6 - Science
Key Points
- Light travels in straight lines
- Opaque objects form shadows
- Transparent materials let light through
- Shadows grow when source moves closer
Olympiad Fact
Sunlight takes about 8 minutes 20 seconds to reach the Earth.
Photosynthesis
Grade 7 - Science
Key Points
- Occurs mainly in leaves (mesophyll cells)
- Chloroplasts contain chlorophyll pigment
- Light reaction happens in thylakoids
- 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
Olympiad Fact
Photosynthesis produces ~115 billion tonnes of biomass per year on Earth.
The Water Cycle
Grade 4 - Science
Key Points
- Evaporation: sun heats water into vapour
- Condensation forms clouds from vapour
- Precipitation: rain, snow, hail fall down
- Collection in oceans, lakes and rivers
Olympiad Fact
Earth recycles the same water — about 97% of it sits in the oceans.
Electricity & Circuits
Grade 6 - Science
Key Points
- Current needs a closed circuit to flow
- Conductors allow flow, insulators block it
- A switch opens or closes the circuit
- Cells in series add up their voltage
Olympiad Fact
Lightning heats the air around it to ~30,000°C — hotter than the Sun’s surface.
Light & Shadows
Grade 6 - Science
Key Points
- Light travels in straight lines
- Opaque objects form shadows
- Transparent materials let light through
- Shadows grow when source moves closer
Olympiad Fact
Sunlight takes about 8 minutes 20 seconds to reach the Earth.
Photosynthesis
Grade 7 - Science
Key Points
- Occurs mainly in leaves (mesophyll cells)
- Chloroplasts contain chlorophyll pigment
- Light reaction happens in thylakoids
- 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
Olympiad Fact
Photosynthesis produces ~115 billion tonnes of biomass per year on Earth.
The Water Cycle
Grade 4 - Science
Key Points
- Evaporation: sun heats water into vapour
- Condensation forms clouds from vapour
- Precipitation: rain, snow, hail fall down
- Collection in oceans, lakes and rivers
Olympiad Fact
Earth recycles the same water — about 97% of it sits in the oceans.
Electricity & Circuits
Grade 6 - Science
Key Points
- Current needs a closed circuit to flow
- Conductors allow flow, insulators block it
- A switch opens or closes the circuit
- Cells in series add up their voltage
Olympiad Fact
Lightning heats the air around it to ~30,000°C — hotter than the Sun’s surface.
Light & Shadows
Grade 6 - Science
Key Points
- Light travels in straight lines
- Opaque objects form shadows
- Transparent materials let light through
- Shadows grow when source moves closer
Olympiad Fact
Sunlight takes about 8 minutes 20 seconds to reach the Earth.
Fractions & Decimals
Grade 5 - Maths
Key Points
- Fraction = part/whole (numerator/denominator)
- Like fractions have same denominator
- To add unlike fractions, find LCM first
- 0.5 = 1/2, 0.25 = 1/4, 0.75 = 3/4
Olympiad Fact
Ancient Egyptians only used unit fractions (1/n) — they wrote 2/3 as 1/2 + 1/6.
Force & Motion
Grade 7 - Science
Key Points
- Force changes speed, direction or shape
- Friction opposes motion between surfaces
- Gravity pulls all objects toward Earth
- Balanced forces mean no change in motion
Olympiad Fact
A falling cat always lands on its feet by rotating mid-air — zero angular momentum.
Acids, Bases & Salts
Grade 7 - Science
Key Points
- Acids taste sour, bases taste bitter
- Litmus paper: red in acid, blue in base
- Neutralization: acid + base = salt + water
- pH scale measures acidity (0-14)
Olympiad Fact
Your stomach produces hydrochloric acid strong enough to dissolve metal.
Geometry Basics
Grade 5 - Maths
Key Points
- Angles: acute < 90°, obtuse > 90°
- Triangle angles always sum to 180°
- Perimeter is the boundary length
- Area measures the surface covered
Olympiad Fact
Bees build hexagonal cells because hexagons hold the most honey with the least wax.
Fractions & Decimals
Grade 5 - Maths
Key Points
- Fraction = part/whole (numerator/denominator)
- Like fractions have same denominator
- To add unlike fractions, find LCM first
- 0.5 = 1/2, 0.25 = 1/4, 0.75 = 3/4
Olympiad Fact
Ancient Egyptians only used unit fractions (1/n) — they wrote 2/3 as 1/2 + 1/6.
Force & Motion
Grade 7 - Science
Key Points
- Force changes speed, direction or shape
- Friction opposes motion between surfaces
- Gravity pulls all objects toward Earth
- Balanced forces mean no change in motion
Olympiad Fact
A falling cat always lands on its feet by rotating mid-air — zero angular momentum.
Acids, Bases & Salts
Grade 7 - Science
Key Points
- Acids taste sour, bases taste bitter
- Litmus paper: red in acid, blue in base
- Neutralization: acid + base = salt + water
- pH scale measures acidity (0-14)
Olympiad Fact
Your stomach produces hydrochloric acid strong enough to dissolve metal.
Geometry Basics
Grade 5 - Maths
Key Points
- Angles: acute < 90°, obtuse > 90°
- Triangle angles always sum to 180°
- Perimeter is the boundary length
- Area measures the surface covered
Olympiad Fact
Bees build hexagonal cells because hexagons hold the most honey with the least wax.
Fractions & Decimals
Grade 5 - Maths
Key Points
- Fraction = part/whole (numerator/denominator)
- Like fractions have same denominator
- To add unlike fractions, find LCM first
- 0.5 = 1/2, 0.25 = 1/4, 0.75 = 3/4
Olympiad Fact
Ancient Egyptians only used unit fractions (1/n) — they wrote 2/3 as 1/2 + 1/6.
Force & Motion
Grade 7 - Science
Key Points
- Force changes speed, direction or shape
- Friction opposes motion between surfaces
- Gravity pulls all objects toward Earth
- Balanced forces mean no change in motion
Olympiad Fact
A falling cat always lands on its feet by rotating mid-air — zero angular momentum.
Acids, Bases & Salts
Grade 7 - Science
Key Points
- Acids taste sour, bases taste bitter
- Litmus paper: red in acid, blue in base
- Neutralization: acid + base = salt + water
- pH scale measures acidity (0-14)
Olympiad Fact
Your stomach produces hydrochloric acid strong enough to dissolve metal.
Geometry Basics
Grade 5 - Maths
Key Points
- Angles: acute < 90°, obtuse > 90°
- Triangle angles always sum to 180°
- Perimeter is the boundary length
- Area measures the surface covered
Olympiad Fact
Bees build hexagonal cells because hexagons hold the most honey with the least wax.
Fractions & Decimals
Grade 5 - Maths
Key Points
- Fraction = part/whole (numerator/denominator)
- Like fractions have same denominator
- To add unlike fractions, find LCM first
- 0.5 = 1/2, 0.25 = 1/4, 0.75 = 3/4
Olympiad Fact
Ancient Egyptians only used unit fractions (1/n) — they wrote 2/3 as 1/2 + 1/6.
Force & Motion
Grade 7 - Science
Key Points
- Force changes speed, direction or shape
- Friction opposes motion between surfaces
- Gravity pulls all objects toward Earth
- Balanced forces mean no change in motion
Olympiad Fact
A falling cat always lands on its feet by rotating mid-air — zero angular momentum.
Acids, Bases & Salts
Grade 7 - Science
Key Points
- Acids taste sour, bases taste bitter
- Litmus paper: red in acid, blue in base
- Neutralization: acid + base = salt + water
- pH scale measures acidity (0-14)
Olympiad Fact
Your stomach produces hydrochloric acid strong enough to dissolve metal.
Geometry Basics
Grade 5 - Maths
Key Points
- Angles: acute < 90°, obtuse > 90°
- Triangle angles always sum to 180°
- Perimeter is the boundary length
- Area measures the surface covered
Olympiad Fact
Bees build hexagonal cells because hexagons hold the most honey with the least wax.
Human Digestive System
Grade 6 - Biology
Key Points
- Digestion starts in the mouth (saliva)
- Stomach produces HCl acid for breakdown
- Small intestine absorbs nutrients (villi)
- Large intestine absorbs water
Olympiad Fact
The small intestine is ~6 meters long with a surface area of a tennis court.
Integers
Grade 6 - Maths
Key Points
- Whole numbers with + and - signs
- Additive inverse: a + (-a) = 0
- Product of two negatives is positive
- Zero is neither positive nor negative
Olympiad Fact
Mathematician Brahmagupta wrote the first rules for negative numbers in 628 CE.
Ratios & Proportions
Grade 6 - Maths
Key Points
- Ratio compares two quantities (a:b)
- Equivalent ratios: multiply both sides
- Proportion: two equal ratios (a:b = c:d)
- Unitary method: find value of one unit first
Olympiad Fact
The golden ratio (1.618...) appears in sunflowers, shells, and the Parthenon.
Algebraic Expressions
Grade 7 - Maths
Key Points
- Variables represent unknown values (x, y)
- Terms: parts separated by + or -
- Coefficient: the number before a variable
- Like terms have the same variable part
Olympiad Fact
Al-Khwarizmi invented algebra in 820 CE - the word comes from his book title.
Human Digestive System
Grade 6 - Biology
Key Points
- Digestion starts in the mouth (saliva)
- Stomach produces HCl acid for breakdown
- Small intestine absorbs nutrients (villi)
- Large intestine absorbs water
Olympiad Fact
The small intestine is ~6 meters long with a surface area of a tennis court.
Integers
Grade 6 - Maths
Key Points
- Whole numbers with + and - signs
- Additive inverse: a + (-a) = 0
- Product of two negatives is positive
- Zero is neither positive nor negative
Olympiad Fact
Mathematician Brahmagupta wrote the first rules for negative numbers in 628 CE.
Ratios & Proportions
Grade 6 - Maths
Key Points
- Ratio compares two quantities (a:b)
- Equivalent ratios: multiply both sides
- Proportion: two equal ratios (a:b = c:d)
- Unitary method: find value of one unit first
Olympiad Fact
The golden ratio (1.618...) appears in sunflowers, shells, and the Parthenon.
Algebraic Expressions
Grade 7 - Maths
Key Points
- Variables represent unknown values (x, y)
- Terms: parts separated by + or -
- Coefficient: the number before a variable
- Like terms have the same variable part
Olympiad Fact
Al-Khwarizmi invented algebra in 820 CE - the word comes from his book title.
Human Digestive System
Grade 6 - Biology
Key Points
- Digestion starts in the mouth (saliva)
- Stomach produces HCl acid for breakdown
- Small intestine absorbs nutrients (villi)
- Large intestine absorbs water
Olympiad Fact
The small intestine is ~6 meters long with a surface area of a tennis court.
Integers
Grade 6 - Maths
Key Points
- Whole numbers with + and - signs
- Additive inverse: a + (-a) = 0
- Product of two negatives is positive
- Zero is neither positive nor negative
Olympiad Fact
Mathematician Brahmagupta wrote the first rules for negative numbers in 628 CE.
Ratios & Proportions
Grade 6 - Maths
Key Points
- Ratio compares two quantities (a:b)
- Equivalent ratios: multiply both sides
- Proportion: two equal ratios (a:b = c:d)
- Unitary method: find value of one unit first
Olympiad Fact
The golden ratio (1.618...) appears in sunflowers, shells, and the Parthenon.
Algebraic Expressions
Grade 7 - Maths
Key Points
- Variables represent unknown values (x, y)
- Terms: parts separated by + or -
- Coefficient: the number before a variable
- Like terms have the same variable part
Olympiad Fact
Al-Khwarizmi invented algebra in 820 CE - the word comes from his book title.
Human Digestive System
Grade 6 - Biology
Key Points
- Digestion starts in the mouth (saliva)
- Stomach produces HCl acid for breakdown
- Small intestine absorbs nutrients (villi)
- Large intestine absorbs water
Olympiad Fact
The small intestine is ~6 meters long with a surface area of a tennis court.
Integers
Grade 6 - Maths
Key Points
- Whole numbers with + and - signs
- Additive inverse: a + (-a) = 0
- Product of two negatives is positive
- Zero is neither positive nor negative
Olympiad Fact
Mathematician Brahmagupta wrote the first rules for negative numbers in 628 CE.
Ratios & Proportions
Grade 6 - Maths
Key Points
- Ratio compares two quantities (a:b)
- Equivalent ratios: multiply both sides
- Proportion: two equal ratios (a:b = c:d)
- Unitary method: find value of one unit first
Olympiad Fact
The golden ratio (1.618...) appears in sunflowers, shells, and the Parthenon.
Algebraic Expressions
Grade 7 - Maths
Key Points
- Variables represent unknown values (x, y)
- Terms: parts separated by + or -
- Coefficient: the number before a variable
- Like terms have the same variable part
Olympiad Fact
Al-Khwarizmi invented algebra in 820 CE - the word comes from his book title.
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