scaffolding
A temporary structure that helps workers reach high places.
In construction, scaffolding is a temporary structure of metal poles and wooden platforms that workers stand on when building or repairing tall structures. Imagine painters working on the third floor of a house: they can't reach that high from the ground, and a ladder isn't stable enough for hours of work. Scaffolding gives them a safe, sturdy platform to stand on while they work.
The word also describes a teaching method where support is gradually removed as someone learns. When you first learned to ride a bike, someone probably held the seat to keep you steady. As you got better, they held on less and less until finally they let go completely and you were riding on your own. That's scaffolding: providing support that gets taken away piece by piece as the learner builds confidence and skill.
Teachers use scaffolding constantly. They might solve the first math problem with you, guide you through the second one, then watch you try the third alone. Or they might break a big essay assignment into smaller steps: first just the outline, then one paragraph, then the full draft. Each step builds on the previous one, like climbing up scaffolding one level at a time. The goal is always the same: to eventually remove the scaffolding because you no longer need it.