Living nature

Topic: Soil and stone
Subtopic: Soil textures and soil tests
Age: 7 - 12
Holistic Planning: Hand
Details: Do a soil touch test i.e. rub soil between your fingers - does it have big grains like sand or minuscule grains like clay, or is it soapy like silt? Roll soil into a sausage, can it stay like that (indicating clay)? Try with different soils.