How do you teach effectively with very few resources?

Many teachers work with limited materials, large classes, and patchy power or internet. How do you teach well anyway?

Approaches that work:

• Peer teaching — stronger students help others; everyone learns more by explaining.
• Low-cost materials — local objects, the environment, and good questions teach a lot.
• Storytelling — a memorable story sticks longer than a list of facts.
• Focus on understanding over memorisation.

What creative methods have you used when resources were scarce? Your idea could help a teacher somewhere right now.