How it all fits together
One idea runs through the chapter: a magnet has two poles, and everything else follows from them — where it attracts most, which way it points, what it pulls or pushes, and how we use it to find our way.
Click any branch to open or close it. Dotted boxes are the end of a branch.
How the ideas connect
Links worth saying aloud — this is what turns facts into understanding.
1 · Poles explain the filings
Attraction is strongest at the poles — that is why iron filings pile up at the ends and why the middle of a bar magnet picks up so little.
2 · Earth's magnet explains the compass
A compass needle is a tiny magnet. It swings north–south because the Earth is a giant magnet pulling on its poles.
3 · Repulsion separates magnets from iron
Both a magnet and an iron bar get attracted by a magnet — only a magnet can be repelled. That is why repulsion is the test.
4 · Passing through materials makes the games work
The maze, the clip in water and the compass with wood in front all work because magnetism acts through non-magnetic materials.
Self-test — rebuild the map from memory
Close the tree above, then tick each one you can say out loud without looking.