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## “The Need for Speed” Rate of Speed

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**“The Need for Speed”**Rate of Speed**Round Table**• Starting with the 1s and continuing clockwise, discuss the following two questions: 1. What are speed boats? 2. What are the many purposes of speed boats? 3. What affects the speed of speed boats? *Instant Stars are number 4s!**What are speed boats?**• A speed boat is defined as a motor boat capable of traveling at high speeds. • There are many different types of speedboats, but regardless of your style or budget, the primary objective of their design is speed and boating pleasure. • How much a speed boat costs depends entirely on your need and choice of style.**What affects the speed of speed boats?**• The type of engine/power source • Wind Speed and Direction • Water Current/Waves • Size of the boat • How low the boat sits in the water • And more!**Think-Pair-Share**Starting with the As discuss the following question: What is the difference between a ratio, a rate, and a unit rate? *Instant Stars are number 2s!**Find the Unit Rate**The following speed boat travels 360 miles in 6 hours. What is the unit rate?**Find the Unit Rate**The following boat travels 144 miles on 4.5 gallons of fuel. What is the unit rate?**Rate of Speed**The table below shows the total distance traveled by a boat riding at a constant rate of speed. How far will the boat have traveled after 10 hours?**Find the Unit Rate**The following speed boat travels 45.5 meters in 13 seconds. What is the unit rate?**Which boat is faster?**The following speed boats are known for their speed. The boat on the left traveled 328 miles in 4 hours, and the boat on the right traveled 498 miles in 6 hours. Which boat is faster?**Make your own problem up!**With your shoulder partner, write your own word problem involving comparing the unit rates of speed boats. Now trade with the pair across from you and solve it!**Would the same elements that have an effect on speed boats**have an effect on the speed of a car? • The type of engine/power source • Wind Speed and Direction • Water Current/Waves • Size of the boat • How low the boat sits in the water • And more!**Finding the Unit Rate of a Car**Students will work with your shoulder partner to race a toy car down the ramp. • Shoulder Partner A will release the car while Student B record the time it takes to reach the bottom. • Switch and record again. • Find the unit rates and compare. • Explain why the unit rates were the same or different?**Exit Slip**Explain how to find the unit rate, and explain why understanding how to find the unit rate is important when comparing speeds.