估算长度

使用英寸、英尺、厘米和米为单位来估算长度

Estimate lengths using units of inches, feet, centimetres, and metres

学习证据 / Evidence

• 在测量之前，先估算教室中某个物体的长度
• 使用已知参照物（例如手指宽度约1厘米）进行合理估算
• 通过测量来检验估算，并评估估算与实际的接近程度

• Estimate the length of a classroom object before measuring it
• Use a known reference (e.g. width of a finger ≈ 1 cm) to make reasonable estimates
• Check estimates by measuring and evaluate how close they were

评估问题 / Assessment

如果{{name}}看着外面停着的汽车，他们能大致估算出它有多少米长吗？然后再检查自己的猜测是否合理？

If {{name}} looks at a car parked outside, can they estimate roughly how many metres long it is — and then check whether their guess was reasonable?