|1. Statement of hypothesis
|- Effect linked to variable
||Water holding capacity increases with decreasing
density of soil, so that capacity of peat moss > soil >
|- Directionality of effect
||The lighter the soil, the greater its water
|- Expected effect/change
||The water holding capacity of sand, soil, and
|- Independent variable
||Soil texture (sand, soil, moss) or size of particles.
|- Dependent variable
||Water holding capacity (retention of water).
|2. Procedures for investigation
|- Detailed procedure/experimentally
||Same quantity of water and soil
are used for each soil sample and comparison is made on water
retained, not collected.
|- Sequence to plan
||Steps are presented adequately with sufficient
detail (i.e. time, 10 minutes; quantities of soil; water;
give directions to fix the funnels).
|- General strategy
||Suggests method to compare drainage
of three soils.
|- Safety procedures
|- Use of equipment/diagram
||Appropriate use of equipment and materials suggested,
such as use of beaker, graduated cylinder, funnel, soils
|3. Plan for recording and organizing
|- Space for manipulation of data or qualitative
||Space is provided adequately for manipulation
|- Matched to plan
||Plan is matched to procedure outlined
in step 2 above.
|- Organized sequentially
||Record relevant data sequentially in a table.
|- Labelled fully (units included)
||Time in minutes or seconds, volume
|- Variables identified
||Water holding capacity, soil texture, time