Science Guide - Grade 9 Canada

Grade 9 Science (SNC1W) 🔬

Ontario Curriculum (2022) · TDSB · Curated Video Lessons

Grade 9 Science (SNC1W) is Ontario's new destreamed science course introduced in 2022. It integrates biology, chemistry, physics, and earth & space science in a single course accessible to all Grade 9 students. This guide covers one key video lesson for each of the four major strands, aligned to the Ontario SNC1W curriculum.

Biology – Ecosystems

🌿 Ecosystems & Biodiversity

The biology strand of SNC1W explores ecosystems — how living organisms interact with each other and with their non-living environment. This lesson covers food webs, energy flow through trophic levels, biodiversity, and the impact of human activity on ecosystems. These concepts connect directly to SNC1W's emphasis on sustainability and Indigenous knowledge of land stewardship.

• Food Webs
• Biodiversity
• Energy Flow
• Sustainability

Source: SNC1W Science

Chemistry – Matter

⚗️ Chemistry: Atoms, Elements & Compounds

The chemistry strand of SNC1W introduces the structure of matter — atoms, elements, compounds, and the periodic table. Students explore physical and chemical properties, chemical reactions, and the conservation of mass. This video provides a clear introduction to atomic structure and how elements combine to form compounds, laying the foundation for later chemistry courses.

• Atomic Structure
• Periodic Table
• Chemical Reactions
• Conservation of Mass

Source: Grade 9 Chemistry

Physics – Electricity

⚡ Electricity & Energy Transfer

The physics strand of SNC1W covers static electricity, current electricity, and energy transfer. Students investigate electrical circuits (series and parallel), voltage, current, resistance (Ohm's Law), and electrical power. This lesson introduces the key concepts of electricity including charge, conductors, insulators, and the relationship between electrical energy and everyday devices.

• Electric Circuits
• Ohm's Law
• Series & Parallel
• Electrical Power

Source: Grade 9 Physics

Earth & Space Science

🌍 Earth & Space: The Solar System

The Earth and space strand of SNC1W explores the universe — the solar system, the scale of space, the formation of stars and galaxies, and Earth's place in the cosmos. This video introduces key concepts about the solar system including planetary motion, gravity, and how space exploration has expanded our understanding of Earth's origins and the conditions that support life.

• Solar System
• Planetary Motion
• Gravity
• Space Exploration

Source: Earth & Space Science

Built for TDSB students · Ontario Curriculum (SNC1W) · Grade 9 Science