Grade 1 Mathematics Lesson Plan: Addition with Sums up to 20
A detailed 4-day Grade 1 math lesson plan teaching addition of numbers with sums up to 20 using hands-on activities, word problems, and counting strategies.
Grade 1 Mathematics Lesson Plan: Addition with Sums up to 20
1.
REPUBLIC OF THEPHILIPPINES
DEPARTMENT OF EDUCATION
Region XII
Schools Division of Sarangani
Malapatan 2 District
Tuyan Integrated School
Profile Component Details
Name of Lesson Performing Addition of Numbers with Sums up to 20
Learning Area/s Mathematics
Designed by Teacher/s Feliciana D. Alcudia
Designed for Grade
Level & Section
Grade 1 - Alcudia
No. of Sessions 4 Sessions (Day 1 – Day 4 )
References DepEd Grade 1 Mathematics Three-Term Budget of Work (BOW), First Term (Week 7), Page 1
Declaration of AI Use AI was utilized to structure real-world math word problems, arrange the daily flow of learning
experiences, and draft inclusive diagnostic metrics in accordance with DO 3, 2026 Annex A.
INTENTIONS
“Meaningful learning experiences are anchored in how we frame them. Start by deciding what you want learners to master by the
end of the lesson — keep it clear and simple.”
1. Learning Competency
Content Standard: The learners demonstrate knowledge and understanding of addition of numbers with sums up to 20.
Performance Standard: The learners perform addition of whole numbers with sums up to 20 accurately using concrete,
pictorial, and mental strategies.
Targeted Competency: Performs addition of numbers with sums up to 20.
2.
2. Learning Objectives
SessionObjective
Day 1 (Monday) Illustrate addition as “putting together” two groups of objects with sums up to 10.
Day 2 (Tuesday) Use the plus (+) and equal (=) signs to write simple number sentences with sums up to
15.
Day 3
(Wednesday)
Add numbers up to 20 using the “counting on” strategy starting from the larger number.
Day 4 (Thursday) Solve simple one-step word problems involving addition with sums up to 20 in real-life
situations.
3. Learner Context
Grade 1 learners understand math better with hands-on materials like counters and sticks. They enjoy counting objects but need
guidance when moving to numbers and symbols. They respond well to games and visuals, and need gentle support to focus and
practice new skills.
LEARNING EXPERIENCE
Pre-Lesson: Prepare counting sticks, bottle caps/tansans, flashcards with + and = signs, worksheets, and pictures for each
session.
Part Day 1 (Monday) Day 2 (Tuesday) Day 3 (Wednesday) Day 4 (Thursday)
3.
Motivati
on
Show 4 pencils+ 3
pencils; ask: “How
many altogether?”
Quick review: Combine
blocks and tell the
total.
Game: “Chant the Next Number”
– say a number, class chants the
next three.
Quick drill: 1 3 + 6 = ?
Teaching Explain: Addition
means putting
together groups to
find the total.
Introduce: + means
add / put together; =
means the total.
Example: 6 + 4 = 10.
Teach “Counting On”: Start at the
larger number, then count
forward. Example: 11 + 5 11…
→
12,13,14,15,16.
Show a story: “Leo has 12
marbles, gets 5 more. How
many in all?” Look for “in
total” or “altogether”.
Activity Put 5 sticks on one
side, 4 on the other;
push together and
count.
Draw sets of objects
and write the number
sentence together.
Practice counting on with fingers
or counters for sums up to 20.
Draw or act out the story,
write the number sentence,
and find the answer.
Reflectio
n
“What happens when
we put two groups
together?”
“Why do we use the
plus and equal signs?”
“Why is counting on faster than
counting from 1?”
“When do we need to add
things in our daily life?”
Learning Resources
Main: Popsicle sticks, bottle caps/tansans, flashcards (+, =), number cards, worksheets, pictures.
Alternative: Use books, crayons, bags, or other items found inside the classroom if no prepared materials are available.
Opportunities for Integration
Language / Reading: Understanding words and clues in simple word problems.
Art: Drawing objects or shapes to show numbers being added.
4.
Values: Appreciationof sharing, helping, and counting responsibly.
ASSESSMENT
Sessio
n
Assessment
Day 1 Observe if learners correctly combine and count groups of objects.
Day 2 Seatwork: Choose the correct sign (+ or =) and write the right total.
Day 3 Oral check: Ask learners to show how they “count on” to find the sum.
Day 4 Worksheet: Write the number sentence and answer for each simple story
problem.
Accommodation: Allow learners who struggle to use counters, fingers, or number lines instead of only writing numbers.
WAYS FORWARD
Extended Learning Opportunities
At home, practice addition by counting spoons, forks, fruits, or toys. Add two groups together and tell your parents how you
found the total.
Reflections
Did learners understand that addition is putting together?
Did most get used to the plus and equal signs?
Who needs more practice with “counting on” or word problems?
How can I make examples more connected to their daily life?
Prepared by: Checked by:
5.
FELICIANA D. ALCUDIAEDEN N. ARORONG
Teacher II Master Teacher 1
Noted by:
CECILIA P. DUERO, PhD
Principal I