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Design & Technology · Early Years · The School
A wide bottom
A tower with a wide bottom stands up better than one with a narrow bottom. Try building the same tower twice, once starting with a big flat piece and once starting with a small one. The wide one will stand taller before it wobbles. Builders use the same idea for real buildings.
Heavy at the bottom
Put the heavy pieces at the bottom and the light ones at the top. A tower with a heavy block on top tips over easily. It is the same reason you carry a heavy bag low rather than on your head. Bottom-heavy is steady; top-heavy is not.
When it falls down
Every builder's tower falls down sometimes, and that is not a failure — it is information. Ask WHERE it fell: at the bottom, in the middle, or at the top? Then change that part and build again. Making something twice and improving it is what designers actually do.
Build a tower ten blocks high, one block wide. Give it a gentle push: over it goes. Now use the same ten blocks to build a wide base of six with four stacked above. Push it the same way: it stays. Same number of blocks, same materials — what changed is the width of the base and how low the weight sits. Test every tower with the same push, or it is not a comparison.