Hectares & Square Kilometers
A square with 100 m sides is 1 hectare; 1 km² = 100 hectares
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How big is a hectare? A square with 100 m sides — about one big playground. And a square kilometer? Cut the 1 km square into a 10×10 grid and every cell is one hectare, so 1 km² = 100 hectares. Build the size sense with the nested grid, then lock it in with conversion practice.
One square kilometer drawn as a 10×10 nested grid where every cell is one hectare (a 100 m × 100 m square), with a playground inside for scale. After the size comparison, practice random unit conversions with instant right-or-wrong feedback.