使用显微镜
Using a Microscope
能够正确使用光学显微镜，制备并观察生物标本，调节焦距，并以适当的放大倍数绘制准确的标注图。
Use a light microscope correctly to prepare, focus, and examine biological specimens, including making accurate labelled drawings at an appropriate magnification
学习证据 / Evidence
- 安全且正确地操作光学显微镜（先用粗准焦螺旋对焦，再用细准焦螺旋对焦）
- 制作带有生物标本（如洋葱表皮）的临时装片
- 计算图像的放大倍数（放大倍数 = 图像大小 ÷ 实际大小）
- 绘制所观察细胞的准确标注图，并标明比例尺
- Sets up a light microscope safely and correctly (course focus then fine focus)
- Prepares a wet mount slide with a biological specimen (e.g. onion skin)
- Calculates the magnification of an image (magnification = image size ÷ actual size)
- Draws an accurate labelled diagram of observed cells with a scale
评估问题 / Assessment
如果{{name}}需要使用学校的显微镜来观察一份生物标本，他/她能否正确调试显微镜、找到要观察的目标，并画出所见内容的标注科学图？
If {{name}} had to use a school microscope to study a biological specimen, could they set it up correctly, find what they're looking for, and produce a labelled scientific drawing of what they see?