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## Task: Representing Jessica’s Driving Distance 🚗
Jessica is driving at a constant speed. She travels **90 miles in 2 hours**.
### Your Goal:
Represent the relationship between **time and distance** using different mathematical models:
✅ Bar Model
✅ Double Number Line
✅ Ratio Table
✅ Graph
Let’s go through each representation step by step!
---
### Step 1: Identifying Current Representation
Which representations have you already used to show the relationship between time and distance?
- Bar Model
- Double Number Line
- Ratio Table
- Graph
If you haven’t used all of them, let’s go through each one step by step.
---
### Step 2: Bar Model Representation 📊
Have you created a **bar model** to represent Jessica’s travel?
**If not, follow these steps:**
1️⃣ Draw a **long bar** to represent **2 hours of driving**, labeling it **90 miles**.
2️⃣ Divide the bar into **two equal parts** to show **1 hour = 45 miles**.
3️⃣ Extend the bar to **3 hours** by adding another **45-mile segment**.
4️⃣ Divide **one 1-hour segment in half** to show **½ hour = 22.5 miles**.
✅ Does your bar model correctly show **½, 1, 2, and 3 hours**?
---
### Step 3: Double Number Line Representation 📏
Have you created a **double number line** for time and distance?
**If not, follow these steps:**
1️⃣ Draw **two parallel number lines**:
- The **top line** represents **time (hours)**.
- The **bottom line** represents **distance (miles)**.
2️⃣ Mark these key points:
- **0 hours → 0 miles**
- **½ hour → 22.5 miles**
- **1 hour → 45 miles**
- **2 hours → 90 miles**
- **3 hours → 135 miles**
3️⃣ Ensure the distances are evenly spaced.
✅ Does your number line show a **proportional relationship**?
---
### Step 4: Ratio Table Representation 📋
Have you created a **ratio table**?
**If not, follow these steps:**
1️⃣ Fill in the table below:
| Time (hours) | Distance (miles) |
|-------------|-----------------|
| 0.5 | 22.5 |
| 1 | 45 |
| 2 | 90 |
| 3 | 135 |
2️⃣ Look for patterns.
3️⃣ What would be the distance for **4 hours**?
✅ Does your table clearly show a **proportional pattern**?
---
### Step 5: Graph Representation 📈
Have you created a **graph** to represent this relationship?
**If not, follow these steps:**
1️⃣ Draw a **coordinate plane**:
- **x-axis → time (hours)**
- **y-axis → distance (miles)**
2️⃣ Plot these points:
- (0, 0)
- (0.5, 22.5)
- (1, 45)
- (2, 90)
- (3, 135)
3️⃣ Draw a straight line through these points.
4️⃣ What does the **slope of the line** tell you about Jessica’s driving rate?
✅ Does your graph correctly show a **linear relationship**?
---
### Step 6: Final Reflection 💭
Great job! Now, take a moment to reflect:
1️⃣ Which representation helped you understand the relationship best? Why?
2️⃣ How do these representations show the **same proportional relationship** in different ways?
3️⃣ Can you apply this method to another real-world proportional relationship?
---
### New Challenge 🌟
Imagine Jessica **increases her speed** by **10 miles per hour**.
- How would this affect the bar model, number line, ratio table, and graph?
- Try adjusting your models to reflect this change!
---
### Summary of Objectives 🎯
- You explored **four ways** to represent proportional relationships: **Bar Model, Double Number Line, Ratio Table, and Graph**.
- You understood how **time and distance** relate at a **constant rate**.
- You analyzed how different models show the **same mathematical pattern**.
---
### Common Core Math Standards 🏆
- **6.RP.A.1** - Understand the concept of a ratio.
- **6.RP.A.3a** - Use ratio reasoning to solve real-world problems.
- **7.RP.A.2** - Recognize proportional relationships.
✅ **Congratulations! You’ve completed this module.** 🚀