Searching for a simple igneous rocks experiment to assist pupils with rock classification based on texture and composition? In the activity, pupils view multiple rocks in various ways to determine texture and composition. They then complete a chart classifying these rocks and interpreting the minerals that comprise each sample. 

Concepts

igneous rocks, texture, mineral properties, properties of rocks

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Additional Tags

science

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Instructional Ideas

• Provide the class with a dissecting microscope and assist them with microscopic exploration of each rock sample to determine similarities and differences in texture and composition 

Classroom Considerations

• Assist students with web research to properly complete the chart and activity
• Provide background detail about rock formation if this has not been previously covered in the course 

Pros

• Uses several samples in the activity, thus providing pupils with the ability to compare and contrast composition and texture in multiple ways
• Materials used are not toxic and may be easily stored for later use

Cons

• May require additional information for the class to completely understand the information being conveyed
• Lack of colorful images may require additional visual aids to allow the class to reference while performing the activity