Learning path · Secondary school
Secondary science foundations
Build a useful explanation at three different scales: an object changing motion, atoms in a reaction, and cells working together. Choose the unit that fits what you are studying.
3 units · 3 skills
School context: Secondary school
Selected introductory secondary-school concepts. Local syllabuses differ; this focused path is not a complete science curriculum or a qualification.
What this path connects
- Explain a change in motion using the net force.
- Check a chemical equation by conserving each element’s atom count.
- Connect biological structures across cell, tissue, organ, and system scales.
The learning sequence
See what each unit covers and open the skill you want to understand. The order gives you a route through the material.
Unit 1
Physics: forces and change
Choose an object, draw the forces, and combine them. Connect the net force to acceleration and check a numerical example with directions and units.
Unit 2
Chemistry: account for every atom
Read formulas and coefficients, balance a reaction without changing its substances, and verify the atom counts on both sides.
Unit 3
Biology: connect structure to function
Use a cell diagram and an organ example to explain how smaller structures contribute to a larger function.
Make the path useful to you
Start with the topic you need
These units address different subjects; completing physics is not a prerequisite for the biology unit. Use the path as an introduction or a focused review alongside your course.
Review the relevant math when needed
Proportional reasoning supports the force-and-mass comparisons, and multiplication supports atom counting. Those refresher links appear on the relevant skills. The cells-and-systems unit does not require that numerical work.
Check the explanation as well as the result
Name the object, substance, or biological scale you are describing. Check a force direction, an atom count, or the connection between structures, and explain why that check supports your answer.
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