The document outlines a lesson plan for teaching students to add three numbers with sums up to 20, using various interactive methods including flashcards and manipulatives. Key concepts include the order property of addition, strategies for finding sums, and encouraging learners to explore different ways to combine numbers. The lesson culminates with learners applying their understanding through assessments and problem-solving activities.

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
0 + 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.

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

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

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

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

18. 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.

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

20. 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

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

22. 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.

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

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

25. 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?

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

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

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

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

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

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

32. 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.

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

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

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

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

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

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

39. 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?

40. Deepening Understanding of Key Idea/Stem

41. Deepening Understanding of Key Idea/Stem
or

42. Deepening Understanding of Key Idea/Stem

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

44. 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.

45. Evaluating Learning
Have
learners
answer
Assessment
1.