Sample Materials List and Procedurals
Materials List
· 20 (or the sum total of the number of trials for each group) cups-state the exact size including color, and all dimensions. Describe the type of cup in detail. All cups must be the same
· Water from the faucet or from the same source (do not alter the type of water used- Specify the type of water used
· Beakers (specific size) Beakers will be used to pour the faucet water into the cups, measuring the liquid precisely in mL
· Table salt (provide the exact measure for each trial using the salt if in the same level)
· Use a metric measuring device to measure the salt.
· Stirring rod
· Masking tape
· Permanent marker
· Digital measurement scale
Experimental Procedure
1. Gather all materials
2. Place 10 cups for each level of the independent variable and the control group .
3. Label each cup with “C” for the control group, add the trial number beside the letter for each group( example)“C-1” through “C10” ;
4. Label the experimental group(s) the same way using “E-1-1, E-1-2,E-1-3” through “E-10 for the experimental groups;
5. If you have a second experimental groups label the 10 cups “E-2-1,E-2-2. E-2-3 etc.
Make all labels with the masking tape and permanent marker.
6. Place 50 mL of water into each of the cups (the same amount of water for the control and the level(s) of the independent variable)
7. Add the _____determined amount of salt in g for Level 1 in each of the 10 cups marked E-1
8. If you have 2 levels of the independent variable, add the determined amount of salt in mL for Level 2 in each of the 10 cups marked E-2
9. Record the beginning volumes in your logbook in the data table constructed for the project. Make sure you have an initial volume column for each trial, and final volume column and a volume difference column
7.Clean up and put the materials back in the proper location.
8.Allow the groups to remain in a selected place in the room and do not move or alter.
9.After 4 days, measure the ending volumes for each trial and place the appropriate data in the prepared data table. Subtract the final volume from the initial volumes for the groups and record in the data table in the logbook. Write the volume difference in the data table for each trial.
10. Clean up and put the materials back in the proper location.