PhysicsGrade 9
What Does It Mean to Fly Faster Than Sound?
On 14 October 1947, Chuck Yeager flew a Bell XS-1 faster than sound. Explore the simple speed comparison behind this historic flight.
2 min read
Free Science Lessons & Study Tips
English-medium Science explained simply for Grades 6–9 — video lessons, clear notes and exam guidance from Chanduni Ranasinghe.
13 free articles and counting
Topic
Grade
13 articles
PhysicsGrade 6
Light Emitting Diode (LED) Full Lesson 💡 | English Medium Science
In this lesson, we learn about light-emitting diodes and how they give off light when current flows through them.
1 min read
PhysicsGrade 6
Diode Circuit Activity Full Lesson 🔋 | English Medium Science
In this lesson, we learn how to draw a circuit diagram with diodes and why reversing the battery stops the bulbs from lighting.
1 min read
PhysicsGrade 6
Diodes and How They Work Full Lesson ⚡ | English Medium Science
In this lesson, we learn about diodes and why they let electric current flow in only one direction.
1 min read
ChemistryGrade 7
Soil Composition Experiment Full Lesson 🫙 | English Medium Science
In this lesson, we learn about a simple experiment that separates soil into layers and why each component settles where it does.
1 min read
BiologyGrade 7
Components of Soil Full Lesson 🌍 | English Medium Science
In this lesson, we learn about the four components of soil and how soil minerals and organic matter help plants grow.
1 min read
BiologyGrade 7
Types of Soil: Sandy, Clay and Loamy Full Lesson 🌱 | English Medium Science
In this lesson, we learn about sandy, clay and loamy soil and how the arrangement of their particles affects water and air retention.
1 min read
BiologyGrade 7
Guttation vs Transpiration Full Lesson 🌿 | English Medium Science
In this lesson, we learn about guttation and transpiration and how plants regulate water loss through their leaves.
1 min read
Study TipsAll Grades
Magnets: Attraction & Repulsion with Experiments – Part 2 | Full Lesson
English Medium Science lesson, students can learn about magnets through clear explanations and practical demonstrations.
5 min read
Study TipsAll Grades
Magnets: Attraction & Repulsion with Experiments – Part 1 | Full Lesson
English Medium Science lesson, students can learn about magnets through clear explanations and practical demonstrations.
5 min read
★ FeaturedStudy TipsAll Grades
Blood Circulatory System Full Lesson ❤️ | English Medium Science
In this lesson, we learn about the Circulatory System and how it helps transport blood, oxygen, nutrients, and other important substances throughout the human body.
5 min read
★ FeaturedStudy TipsGrade 8
Physical Changes | Salt and Water Experiment
See physical changes in action with a simple salt-and-water experiment — dissolving and evaporation — and discover how the salt can be recovered unchanged.
5 min read
★ FeaturedStudy TipsAll Grades
🌍 Did you know the Earth has different layers beneath our feet?
Explore the crust, mantle and core — a quick, simple guide to what's beneath our feet and why it matters for Grade 6 science.
5 min read
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