Module 1 lesson 12 intro notes
- 1. Name ______________________________________ Date ________________ Mrs. Labuski / Mrs. Pinto Mod 1 Lesson 12 Lesson 12: From Ratio Tables to Double Number Line Diagrams Katie makes 5 rainbow loom bracelets in 20 minutes. How long will it take her to make 8 bracelets? Step 1 – Make a table Bracelets Minutes Step 2 – Identify question Bracelets Minutes __ __ Step 3 – Make a double number line diagram Label both number lines Write all needed ratios on the number lines Identify the question Step 4 – Number the number line for the given value using the least amount of units (number it by ones, fives, tens, etc that fits with the given number to create the least amount of columns.)
- 2. Step 5 – Determine the fraction of the other unit we are trying to find For example: The number line of the given unit was broken into five sections We need to figure out the span of the other number line Therefore we need to find 3 5 of 20 What is 1 5 of 20 6 7 8 9 Step 6 – Find the fraction of the number Find ퟏ ퟓ of 20 Step 7 – Number the other number line. It will take Katie ________minutes to make 8 rainbow loom bracelets. This answer is reasonable because it falls between the two ratios on the double number line diagram and ratio table. 8 Bracelets 5 10 15 Minutes 20 40 60 bracelets minutes 5 10 20 40 ? 32
- 3. Name ______________________________________ Date ________________ Mrs. Labuski / Mrs. Pinto Mod 1 Lesson 12 Lesson 12: From Ratio Tables to Double Number Line Diagrams Katie makes 5 rainbow loom bracelets in 20 minutes. How long will it take her to make 8 bracelets? Step 1 – Make a table Bracelets 5 10 15 Minutes 20 40 60 Step 2 – Identify question 8 Bracelets 5 10 15 Minutes 20 40 60 ? Step 3 – Make a double number line diagram Label both number lines Write all needed ratios on the number lines Identify the question bracelets minutes 5 10 8 ? 20 40 Step 4 – Number the number line for the given value using the least amount of units (number it by ones, fives, tens, etc that fits with the given number to create the least amount of columns.) bracelets minutes 6 7 8 9 5 10 ? 20 40
- 4. Step 5 – Determine the fraction of the other unit we are trying to find For example: The number line of the given unit was broken into five sections We need to figure out the span of the other number line Therefore we need to find 3 5 of 20 What is 1 5 of 20 6 7 8 9 Step 6 – Find the fraction of the number Find ퟏ ퟓ of 20 1 x 20 = 20 = 4 5 1 5 Step 7 – Number the other number line. 24 28 32 36 It will take Katie 32 minutes to make 8 rainbow loom bracelets. This answer is reasonable because it falls between the two ratios on the double number line diagram and ratio table. 8 Bracelets 5 10 15 Minutes 20 40 60 bracelets minutes 5 10 20 40 ? 20 32