How the written practical paper is built, how to describe an experiment with variables and a method, how to record data in a table, plot and use a graph, state precautions, and write a conclusion.
5 narrated scenes. Press play, listen and read along — the points appear as they are explained. Use ‹ Prev / Next › or the scene bar to jump to any scene.
Paper 032 asks you to do in writing what the SBA does in the lab. The mark scheme rewards the same habits: variables, units, repeats, graphs and honest conclusions.
Narration uses your device’s built-in voice. No sound? Switch to “Captions only” — the captions advance on their own.
Copy these into your notebook in your own words — that is how they stick.
2 h 10 min; three questions; 40 marks; Experimental Skills 30, Use of Knowledge 10.
Aim, hypothesis, manipulated, responding and controlled variables.
Apparatus, diagram, steps, repeat, average.
Quantity and unit in each heading; independent variable first.
Independent on x; axes labelled; line of best fit; gradient with unit.
Specific to the experiment.
Name the type and the effect on the result.
Supported by the data and linked to the aim.
8 items modelled on real CSEC Paper 1 questions. Choose one answer for each, then check. Aim for 80% or better. Work each item on paper first.
Write full answers, then reveal the mark scheme and tick the points you earned (20 marks in total). Show all your working — method marks count. Your answers are saved on this device.
Question 1 [20 marks]
A student wants to investigate how the mass of a trolley affects its speed at the bottom of a ramp.
(a) (a) State a suitable hypothesis. [2]
(b) (b) Identify the manipulated variable, the responding variable and two controlled variables. [4]
(c) (c) List the apparatus needed. [2]
(d) (d) Describe a method that the student could use. [5]
(e) (e) Design a table in which the results can be recorded. [3]
(f) (f) State two precautions to improve the accuracy of the investigation. [2]
(g) (g) State one source of error and its effect. [2]
Everything in this lesson is based on these parts of the CXC syllabus and papers.