Chapter 3 Ratios and Rates Day 1 Expressing
- Slides: 43
Chapter 3 Ratios and Rates
Day…. . 1. Expressing ratios in all forms 2. Equivalent ratios 3. Creating and interpreting ratio tables to represent and solve problems involving equivalent ratios. 4. Exploring ratios using models 5. Creating and simplifying equivalent ratios
Day 1
Bell Work During one year Mrs. Laymon sent 484 text messages. This number was 1/3 the number of text messages her son sent during the same year. How Many text message did her son send? Draw a diagram and justify your response. If he sent the same number of messages each month, how many messages did he send in one month?
Vocabulary • Nails Used 5 10 15 Shelves Hung 1 2 3
Introducing Ratios •
Ratio Scavenger Hunt 1. Write your exit ticket. 2. Pack up everything but a pencil. 3. When told, place your backpack or other belongings in your chair
Wrap it Up • Review • Questions • Exit Tickets
Day 2
Bell Work A recipe requires a ratio of 2 cups of flour to 3 cups of water. How much water will you need if you have 12 cups of flour? The ratio of Tennessee representatives to total representatives in the U. S Congress is 3 to 145. If the U. S. Congress has 435 representatives, how many represent Tennessee?
Homework Check
• Vocabulary Nails Used 5 10 15 Shelves Hung 1 2 3
I Can…. determine if two ratios are equivalent.
Equivalent Ratios Essential Understanding: • To create equivalent ratios, multiply or divide each quantity by the same number. • To determine if two ratios are equivalent, first write the ratios in fraction form. Then find their cross products by multiplying the numerator of one ratio by the denominator of the other product. If the cross products are equivalent then the ratios are equivalent.
Watch This • http: //learnzillion. com/lessons/606 -createequivalent-ratios • http: //learnzillion. com/lessons/607 -simplifyratios-using-common-factors
Practice
Wrap it Up • Review • Questions • Exit Tickets
Day 3
Bell Work The ratio of walkers to bikers on a trail is about 10 to 6. If there are 20 walkers, about how many bikers would there be? Draw a diagram and justify your response.
Homework Check
• Vocabulary Nails Used 5 10 15 Shelves Hung 1 2 3
I Can…. create and use ratio tables to represent and solve problems involving equivalent ratios.
Ratio Tables Essential Understanding: • Ratio tables can be used to find equivalent ratios. Remember equivalent ratios express the same relationship between two quantities. Example: Ratio of eggs to servings in a recipe for cake Servings 8 16 24 32 40 48 56 Eggs 2 4 6 8 10 12 14
Watch This • http: //learnzillion. com/lessons/587 -solveratio-problems-using-tables-andmultiplication • http: //learnzillion. com/lessons/608 -solvemissing-values-in-ratio-problems-using-a-table
Practice
Wrap it Up • Review • Questions • Exit Tickets
Day 4
Bell Work The table below shows how students in two classes arrive at school most mornings. Method Bus Walk Bike Number of Students 14 18 10 Car 8 Based on the results in the table, how many can be expected to take the bus if there are 250 students in the school?
I Can…. explore ratios using models.
• Vocabulary Nails Used 5 10 15 Shelves Hung 1 2 3
Homework Check
Lego Creation Station Clear your desk
Wrap it Up • Review • Questions • Exit Tickets
Day 5
Bell Work Packs of gum are on sale this week 5 for $4. If Mrs. E wanted to buy gum for the class how much would it cost to buy each student a pack? Create a ratio table to find the price for 10, 15, 20, and 25 packs. # of Packs 5 Price $4 10 15 20 25 Wow! That’s a lot of money for gum, when you have 90 students! Mrs. E decides to buy every student one piece of gum instead. For a total of 90 pieces. Each pack had 5 pieces. How many packs did she buy in all?
Homework Check
• Vocabulary Nails Used 5 10 15 Shelves Hung 1 2 3
I Can…. • Relate ratios and rates to the multiplication and division of fractions. • Look at my answer to check that I answered what was asked and see if my answer makes sense.
Let’s Review Please Take out your Study Guide
p. Op Quiz • Take out a pencil and a calculator • Clear everything else from your desk
Wrap it Up • Review • Questions • Quiz
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