Year 9 Science · Unit 4 · Lesson 18
Foundation Worksheet
Learning Goals
Order the steps
Number the events from 1 to 9 to show the correct order for a practical investigation. Event 1 = what happens first.
| Order (1–9) | Step in the investigation |
|---|---|
| Collect data for 3 trials at each ramp angle | |
| Identify the independent variable (IV), dependent variable (DV), and controlled variables | |
| Write a CER conclusion referencing specific data values | |
| Design a data table with correct column headings and units | |
| Set up the ramp apparatus and measure the starting angle | |
| State the aim of the investigation | |
| Choose an appropriate graph type and plot the results | |
| Calculate the average speed for each angle | |
| Identify the trend shown in the graph |
Investigation planning sheet
Complete the planning sheet below for the investigation: "Does ramp angle affect the speed of a toy car?"
(a) Write a hypothesis using the if-then-because format. If [IV is changed], then [DV will change in this way], because [reason from Newton's Second Law].
(b) List the independent variable (IV), dependent variable (DV), and three controlled variables for this investigation.
| Independent variable (what you change) | |
| Dependent variable (what you measure) | |
| Controlled variable 1 | |
| Controlled variable 2 | |
| Controlled variable 3 |
(c) Design a data table for this investigation. The IV values are: 10°, 20°, 30°, 40°, 50°. Include columns for 3 trials and an average. Write correct headings and units.
Draw your data table here. Include column headings, units, and rows for each angle value.
(d) What type of graph would you use to display the results of this investigation? Explain why this graph type is appropriate for this data.
Wrap Up
In one sentence, what was the main idea of this lesson?