Variables and Relationships
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Variables and Relationships
🎯 WALT (We Are Learning To)
Today we are learning to:
- Identify variables in real-life situations
- Understand how two variables relate to each other
- Create tables of values and plot relationships on graphs
📊 Part 1: Identifying Variables
a) The cost of petrol depends on how many litres you buy.
Variables: cost of petrol / number of litres / petrol station name
b) Your phone battery percentage decreases as you use apps.
Variables: battery percentage / phone colour / time using apps
a) What are the two variables? _____________ and _____________
b) Complete the table:
| Week | 0 | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|
| Total Money ($) | 20 | ____ | ____ | ____ | ____ |
📈 Part 2: Tables and Relationships
a) Complete the table:
| Data Used (GB) | 0 | 1 | 2 | 3 | 5 |
|---|---|---|---|---|---|
| Total Cost ($) | ____ | ____ | ____ | ____ | ____ |
b) What happens to the total cost when data usage increases?
Pattern 1: 1 square, Pattern 2: 4 squares, Pattern 3: 9 squares, Pattern 4: 16 squares
a) Complete the table:
| Pattern Number | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Number of Squares | 1 | 4 | 9 | 16 | ____ |
b) Describe the relationship between pattern number and number of squares:
Write the missing values:
- 0 km costs: $______
- 1 km costs: $______
- 2 km costs: $______
- 5 km costs: $______
🎯 Success Check
a) Think of a real-life situation with two variables:
b) Describe how they relate to each other:
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