材料的性质

根据外观和简单的物理性质（如硬度、纹理和颜色）来比较和分组不同种类的岩石。

Compare and group different kinds of rocks based on their appearance and simple physical properties such as hardness, texture, and colour

学习证据 / Evidence

• 描述岩石的至少三个可观察性质：硬度、纹理、颜色、颗粒大小。
• 根据所选性质将一组岩石分成若干组。
• 比较两块岩石并描述它们性质的差异。

• Describe at least three observable properties of rocks: hardness, texture, colour, grain size
• Sort a collection of rocks into groups based on chosen properties
• Compare two rocks and describe how their properties differ

评估问题 / Assessment

{{name}}能观察一组岩石，并根据它们是坚硬还是易碎、粗糙还是光滑、浅色还是深色来分类吗？

Can {{name}} examine a collection of rocks and sort them by whether they're hard or crumbly, rough or smooth, and light or dark?