Question 9
Investigate the strength of different paper samples. Materials: 5 strips each of 4 different types of paper (same size, approximately 20 cm × 5 cm), hole puncher, paper clip, yoghurt tub, string, marbles.
Identify the variables and controls in your investigation. The control variables (what you will keep the same) are:
Identify the variables and controls in your investigation. The control variables (what you will keep the same) are:
