1. The Ubiquitous Number Line Basic Subtraction Model From Korean Mathematics Book 1-2-1, p 9

2. The Ubiquitous Number Line Comparison Subtraction Model From Korean Mathematics Book 1-1-5 pg 65

3. The Ubiquitous Number Line Time modeled on Number Line From Korean Mathematics Book 2-1-6, pg 62 the time of the time of starting cleaning finishing cleaning

4. Comparison of Fractions with Decimals Fill in the box with a fraction or decimal. From Korean Mathematics Book 3-2-7, p 95 The Ubiquitous Number Line

5. Addition of Decimals Let’s find a way to add the numbers 0.5 and 0.3. 0.5 is 5 of 0.1 and 0.3 is 3 of 0.1. The sum of 0.5 and 0.3 is 8 of 0.1. 0.5 + 0.3 = 0.8 From Korean Mathematics Book 3-2-7, p 96 The Ubiquitous Number Line

6. Subtraction of Decimals Let’s think of finding the difference between 0.56 and 0.32. From Korean Mathematics Book 4-2-6, p 78 The Ubiquitous Number Line

7. Subtraction of Decimals Using the number line above, From Korean Mathematics Book 4-2-6, p 78 The Ubiquitous Number Line

8. Division of Whole into Fractions on Number Line From Korean Mathematics Book 5-2-2, pg 26 Stanford is making two animal shapes by dividing in half a wire 5 m in length. Let’s find out the length of the wire for one animal shape. How can we do the division, 5 ÷ 2?

9. Three Step, Mixed Operation There are 45 children in the class. From Korean Mathematics Book 6-2-9, p 133 45 students enjoy physical education. of the remainder like math. How many like math?

10. A stack of wood is 40.5 cm high. Among them are 15 boards which are 0.9 cm thick. The rest are 1.5 cm thick. How many 1.5 cm thick boards are there? Leads to Equations Identification of x From Korean Mathematics Book 6-2-9, p 135 (0.9 × 15) + (1.5 × x) = 40.5