1. Splash Screen

2. Lesson Menu Five-Minute Check (over Lesson 1–1) Main Idea Example 1:Problem-Solving Skill

3. Main Idea/Vocabulary I will use the four-step plan to solve problems.

4. Example 1 Dina’s family went to a zoo. They learned that a roadrunner is 1 foot tall. An African elephant is 12 feet tall. How much taller is an African elephant than a roadrunner?

5. Example 1 Understand What facts do you know? The roadrunner is 1 foot tall. The African elephant is 12 feet tall. What do you need to find? You need to find how much taller an African elephant is than the roadrunner.

6. Example 1 Plan To find out how much taller the African elephant is than the roadrunner, subtract.

7. Example 1 Solve Answer: So, the elephant is 11 feet taller than the roadrunner. 12 1 – 11

8. Example 1 Check Since addition and subtraction are inverse operations, you can use addition to check subtraction. So, the answer is correct.

9. End of the Lesson End Lesson

10. Resources Five-Minute Check (over Lesson 1–1) Image Bank Math Tool Chest Place Value

11. 1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 1–1) A.Add 1; 9 B.Add 2; 6 C.Add 3; 7 D.Subtract 1; 3 Identify the pattern. Then find the missing number. 2, 4, ___, 8

12. 1.A 2.B 3.C 4.D Five Minute Check 2 (over Lesson 1–1) A.Add 4; 9 B.Add 1; 16 C.Add 5; 20 D.Add 10; 17 Identify the pattern. Then find the missing number. 5, 10, 15, ___, 25

13. 1.A 2.B 3.C 4.D Five Minute Check 3 (over Lesson 1–1) A.Add 3; 12 B.Subtract 3; 6 C.Subtract 2; 7 D.Add 6; 14 Identify the pattern. Then find the missing number. 6, 9, ___, 15

14. 1.A 2.B 3.C 4.D Five Minute Check 4 (over Lesson 1–1) A.Add 3; 5, 9 B.Add 2; 14, 18 C.Add 4; 16, 24 D.Subtract 3; 15, 17 Identify the pattern. Then find the missing number. 8, 12, ___, 20, ___

15. End of Custom Shows