Grade 9 Science
6 units matched to the BC Curriculum.
Big Ideas
- Cells are derived from cells.
- The electron arrangement of atoms impacts their chemical nature.
- Electric current is the flow of electric charge.
- The biosphere, geosphere, hydrosphere, and atmosphere are interconnected, as matter cycles and energy flows through them.
Units
Unit 1
Cells from Cells
How cells copy their DNA and divide by mitosis, the stages in order, why cells divide for growth and healing, and what can go wrong when cell growth isn't controlled.
Learning standard: Cell division: DNA, genes, the cell cycle, mitosis and the role of cell division in growth and repair
Unit 2
Reproduction
How organisms reproduce with one parent or two, why sexual reproduction creates variety, the parts of a flower, and the strengths and weaknesses of each approach.
Learning standard: Asexual and sexual reproduction in plants and animals; fertilization and genetic variety
Unit 3
Atoms & Electrons
Protons, neutrons and electrons, drawing electron shells for the first 20 elements, valence electrons, periodic table groups and periods, and ions and isotopes.
Learning standard: Atomic structure and the periodic table: electron arrangement, valence electrons and ions
Unit 4
Electrons & Compounds
How valence electrons decide whether atoms gain, lose or share electrons, ionic and covalent compounds, and reading simple chemical formulas.
Learning standard: The arrangement of electrons determines the compounds formed by elements: ionic and covalent bonding
Unit 5
Electric Current
Static electricity, current, voltage and resistance, solving V = I × R, series and parallel circuits, electrical safety, and electricity generation in BC.
Learning standard: Electricity: static electricity, current, voltage, resistance, Ohm's law, series and parallel circuits
Unit 6
Cycles & Sustainability
How the Sun's energy and cycles of matter (carbon, water, nitrogen) link living and non-living things, how ecosystems and food webs work, BC examples like salmon and the mountain pine beetle, and First Peoples ideas about interconnectedness and caring for the land.
Learning standard: Effects of solar radiation; matter cycles; sustainability of systems; First Peoples knowledge of interconnectedness and sustainability
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