GENERAL TIPS:
● Be as pedantic as possible.
● FOCUS ON INDEPENDENT AND DEPENDENT VARIABLE AND MAKE SURE
THEY ARE RIGHT.
● Use the same formatting. If you have decimal points in your average and you
have whole numbers in your data set, then put ,00.
● Don’t forget to add the units.
● Measure the bottom of the meniscus.
● Say what the colour change was. “Blue to black”
● If recording the colour change of the detection agent then think of it without the
base solution. Read the question.
● Make sure you use the information sheet.
● Can’t say there is no colour change. Say “Blue to blue.”
● Or say, “changed from red to blue.”
● Tables must be detailed (colour change, headings, etc…)
● Don’t say it is white unless it is clearly white. Rather say, transparent, clear or milky.
● Make a distinction between controlled variables and control.
● Controlled variable: Additional value of the independent variable, that is treated the
same as the other values, but will have no effect on the dependent variable, therefore
proving the effect of the other values. Allows you to see what would happen without
the independent variable, allowing you to see the result of changing the independent
variable.
● The dependent variable is usually the last thing you worked towards. “Record the
colour change.” Therefore DV is colour change.
● Qualitative data: Qualities (non-numbers, observation using words).
● Quantitative data: Numbers.
● Accuracy:
-Reliability: Repeat experiment, compare experiment & increase (if no change) or
reduce (if change. 0,2-0,3 → 0,21; 0,22…) the range.
-Validity: Fixed variables. Identify the variables and the tools used. (Was it fair).
-Precision (accuracy in IEB exam): The tool used. Ruler, stopwatch, syringe, etc…
(Scale division, increment).
● Aim: To determine the relationship between the independent and the dependent
variable. (Wondering question).
● Do the aim first then the method, and then the hypothesis.
● Hypothesis: Will have the independent and dependent variable. “If IV increases,
then the DV decreases.” Directional statement. Predict the relationship between the
● Be as pedantic as possible.
● FOCUS ON INDEPENDENT AND DEPENDENT VARIABLE AND MAKE SURE
THEY ARE RIGHT.
● Use the same formatting. If you have decimal points in your average and you
have whole numbers in your data set, then put ,00.
● Don’t forget to add the units.
● Measure the bottom of the meniscus.
● Say what the colour change was. “Blue to black”
● If recording the colour change of the detection agent then think of it without the
base solution. Read the question.
● Make sure you use the information sheet.
● Can’t say there is no colour change. Say “Blue to blue.”
● Or say, “changed from red to blue.”
● Tables must be detailed (colour change, headings, etc…)
● Don’t say it is white unless it is clearly white. Rather say, transparent, clear or milky.
● Make a distinction between controlled variables and control.
● Controlled variable: Additional value of the independent variable, that is treated the
same as the other values, but will have no effect on the dependent variable, therefore
proving the effect of the other values. Allows you to see what would happen without
the independent variable, allowing you to see the result of changing the independent
variable.
● The dependent variable is usually the last thing you worked towards. “Record the
colour change.” Therefore DV is colour change.
● Qualitative data: Qualities (non-numbers, observation using words).
● Quantitative data: Numbers.
● Accuracy:
-Reliability: Repeat experiment, compare experiment & increase (if no change) or
reduce (if change. 0,2-0,3 → 0,21; 0,22…) the range.
-Validity: Fixed variables. Identify the variables and the tools used. (Was it fair).
-Precision (accuracy in IEB exam): The tool used. Ruler, stopwatch, syringe, etc…
(Scale division, increment).
● Aim: To determine the relationship between the independent and the dependent
variable. (Wondering question).
● Do the aim first then the method, and then the hypothesis.
● Hypothesis: Will have the independent and dependent variable. “If IV increases,
then the DV decreases.” Directional statement. Predict the relationship between the
