MATH-WEEK8- grade 1 quarter 1-DAY-1.pptx

ppt math week 8

1. MATHEMATICS Quarter 1 Week 8

2. WEEK 8 – DAY 1 At the end of the lesson, the learners should be able to: • add 3 numbers with sums up to 20; and • compare the sum of numbers with addends in different order.

3. Activating Prior Knowledge Using flashcards, have a drill on adding numbers with sums up to 10. Include cards that can make learners use their knowledge of order and zero properties of addition.

4. Activating Prior Knowledge 2 + 3 4 + 4

5. Activating Prior Knowledge 1 + 2 + 3

6. Activating Prior Knowledge 5 + 5 7 + 3

7. Activating Prior Knowledge 2 + 1 4 + 2

8. Activating Prior Knowledge 2 + 5 5 + 2

9. Activating Prior Knowledge 0 + 5 7 + 0

10. Lesson Purpose/Intention To add 3 numbers with sums up to 20

11. Lesson Language Practice Sum addends add plus equals

12. Reading the Key Idea/Stem Watch the video about addition.

13. Developing Understanding of Key Idea/Stem Post the problem on the board. Read it to the learners.

14. Developing Understanding of Key Idea/Stem Jay has 3 pencils. Kat has 2 pencils. Pat has 3 pencils.

15. Developing Understanding of Key Idea/Stem How many pencils would there be if they put their pencils together?

16. Developing Understanding of Key Idea/Stem Show the illustration to help learners understand the problem better. Jay Kat Pat

17. Developing Understanding of Key Idea/Stem Have learners answer the problem. Allow them to use manipulatives or drawings to solve it. You may also let them work in pairs.

18. Developing Understanding of Key Idea/Stem Solution Number 1: Combining all the pencils and counting them all together.

19. Developing Understanding of Key Idea/Stem Solution Number 2: Counting on, starting from one group of pencils (the one with the greater number of pencils is encouraged) until all the pencils are counted. 3 2 3

20. Developing Understanding of Key Idea/Stem Solution Number 3: Writing the number sentence, accompanied by counters/drawings. 3 + 2 + 3 = 8

21. Developing Understanding of Key Idea/Stem Tell the learners that given three addends, 3 + 2 + 3, only two addends may be added at a time.

22. Developing Understanding of Key Idea/Stem 3 + 2 + 3 5 + 3 = 8

23. Developing Understanding of Key Idea/Stem 3 + 3 + 2 6 + 2 = 8

24. Deepening Understanding of Key Idea/Stem Extend the problem. Suppose Jay has 4 pencils, Kat has 5 pencils, and Pat has 6 pencils. How many pencils do they have in all?

25. Deepening Understanding of Key Idea/Stem Jay Kat Pat

26. Deepening Understanding of Key Idea/Stem Learners may use counters or illustrations to solve the problem.

27. Deepening Understanding of Key Idea/Stem 4 + 5 + 6 9 + 6 = 15

28. Deepening Understanding of Key Idea/Stem Ask the learners how else they can add the numbers.

29. Deepening Understanding of Key Idea/Stem 4 + 5 + 6 4 + 11 =15

30. Deepening Understanding of Key Idea/Stem 4 + 5 + 6 10 +5 =15

31. Deepening Understanding of Key Idea/Stem Relate the given situation to the order property of addition, which states that the order of the addends does not affect the sum. Regardless of which are added first, the answer remains the same.

32. Deepening Understanding of Key Idea/Stem Addends may be written as: 5+6+4=4+6+5

33. Deepening Understanding of Key Idea/Stem The addends 5 and 6 are interchanged but the sum should remain the same.

34. Deepening Understanding of Key Idea/Stem 5 +6+4=4+6+5 5 + 10 = 10 +5 15 = 15

35. Deepening Understanding of Key Idea/Stem Support the discussion with the use of real pencils or other counters as shown.

36. Deepening Understanding of Key Idea/Stem Adding 4, 5, and 6 . add 4 and 6 first to get 10.

37. Deepening Understanding of Key Idea/Stem Adding the 10 and the remaining 5 gives 15.

38. Deepening Understanding of Key Idea/Stem Give another example. Suppose Jay has 3 pens, Kat has 5 pens, and Pat has 5 pens. How many pens do they have in all?

39. Deepening Understanding of Key Idea/Stem

40. Deepening Understanding of Key Idea/Stem or

41. Deepening Understanding of Key Idea/Stem

42. Deepening Understanding of Key Idea/Stem Let the learners answer LAS 1.

43. Making Generalizations and Abstractions How do you find the sum of three addends? First, add two addends. If possible, choose a pair of addends that makes 10 (or with a sum of 10). Then, add this sum to the third addend to get the final sum.

44. Evaluating Learning Have learners answer Assessment 1.