1. Lesson Overview
- Subject: Mathematics
- Topic: Basic Addition (within 10; introductory strategies)
- Grade Level/Age Group: 1st Grade (Ages 6–7)
- Duration: 60 minutes
2. Learning Objectives
By the end of the lesson, students will be able to:
- Model addition problems within 10 using manipulatives (e.g., counters, cubes) to show “putting together.”
- Solve addition equations within 10 using at least one strategy (counting on, making a set, drawing).
- Explain their thinking using simple math language (e.g., “I started at 5 and counted on 3 more”).
- Write a matching addition equation for a pictured or acted-out situation (e.g., 4 + 2 = 6).
3. Materials and Resources
- Counting manipulatives: linking cubes, counters, or beads (10 per student or pair)
- Ten-frames (printed mats or dry-erase ten-frame boards)
- Number cards (0–10)
- Chart paper/whiteboard and markers
- Student recording sheet (addition within 10; pictures + equation space)
- “Addition Story” picture cards (teacher-made: simple scenes like apples, balloons, animals)
- Exit ticket slips (2–3 problems)
- Optional: small dice (1–6) for partner game
4. Lesson Outline
A. Introduction (10 minutes)
1) Warm-Up: “Quick Show” (5 min)
- Teacher briefly flashes a ten-frame with dots (e.g., 6 as 5+1).
- Students say how many and how they knew (e.g., “I saw 5 and 1 more”).
- Purpose: activates number sense needed for addition.
2) Set the Purpose (5 min)
- Teacher says: “Today we will learn how to add. Adding means putting groups together to find the total.”
- Share objectives in student-friendly language:
- “We will use cubes to show addition.”
- “We will write addition sentences like 3 + 2 = 5.”
- “We will explain how we got our answer.”
B. Main Activities (45 minutes)
Activity 1: Teacher Modeling with Manipulatives (10 minutes)
Teaching method: Explicit instruction + think-aloud + visual modeling
- On the board, show a simple story: “I have 3 red apples and 2 green apples. How many apples in all?”
- Use counters: make a group of 3, then a group of 2; push together.
- Write the equation: 3 + 2 = 5.
- Model “counting on”:
- “Start at 3… count on 2: 4, 5.”
- Ask quick checks:
- “What does the + sign mean?”
- “What does = mean?” (same as / is)
Teacher facilitation tip: Emphasize that the first number is the starting amount; the second is what we add.
Activity 2: Guided Practice—“Build It, Draw It, Write It” (15 minutes)
Teaching method: Guided practice with gradual release
- Students work in pairs with manipulatives and a ten-frame.
- Teacher displays 3–4 addition problems one at a time (within 10), such as:
- 4 + 1
- 5 + 3
- 2 + 6
- For each problem, students:
- Build it with counters/cubes
- Draw it quickly (circles or ten-frame dots)
- Write it as an equation on their recording sheet
- Teacher circulates, prompting with questions:
- “What number are you starting with?”
- “How did you count on?”
- “Can you show it in a different way (ten-frame vs. cubes)?”
Collaboration: Partners check each other’s work and agree on the total before writing the final equation.
Activity 3: Small-Group Game—“Roll, Add, and Say” (12 minutes)
Teaching method: Hands-on practice + math talk
- Partners roll a die twice (or roll two dice if available).
- They build each roll on a ten-frame or with cubes, then combine to find the total (stay within 10 by using one die twice or dice with 1–5).
- Each student must say an addition sentence aloud:
- “I rolled 4 and 3. 4 + 3 = 7.”
- Encourage a strategy statement: “I started at 4 and counted on 3.”
Teacher role: Listen for correct math language, correct misconceptions, and praise clear explanations.
Activity 4: Independent Practice—Addition Stories (8 minutes)
Teaching method: Independent application
- Students complete a short worksheet (5–6 problems) with picture scenes.
- For each scene, students:
- Count each group
- Write the equation ( + = ___)
- Optional: circle the total group to reinforce “together”
Differentiation:
- Support: Provide a number line (0–10) and allow students to use manipulatives.
- Challenge: Add a “Write your own addition story” box: draw two groups and write the equation.
C. Conclusion (5 minutes)
1) Whole-Class Review (3 min)
- Ask: “What does addition mean?” “How can we solve addition problems?”
- Invite 1–2 students to share a strategy (counting on, using ten-frames, making groups).
2) Closure/Exit Ticket (2 min)
- Students complete an exit ticket with 2 problems (e.g., 6 + 1, 3 + 4).
- Collect as they line up or transition.
5. Assessment Methods
Formative Assessment (during lesson)
- Observation checklist:
- Uses manipulatives correctly to show two groups combining
- Counts accurately (one-to-one correspondence)
- Attempts “counting on” starting from the first addend
- Student talk: Listen for explanations using “start at,” “count on,” “in all/total.”
- Guided practice work: Spot-check recording sheets for correct equations.
Summative Assessment (end of lesson)
- Exit ticket (2 problems) scored for:
- Correct total
- Correct equation format (addends + equals sign)
- Independent worksheet accuracy (teacher reviews after class to plan next steps)
6. Optional Extension or Homework
Option A: Home Addition Hunt (5–10 minutes at home)
- Students find two small groups of objects at home (e.g., 3 socks and 2 socks).
- They draw the two groups and write the equation: + = ___. (Do 3 examples.)
Option B: Classroom Extension Center (early finishers)
- “Make 10” exploration with ten-frames: students pick a number card (1–9) and show how many more to make 10 (foundation skill for future addition fluency).
Reusable teacher note: This structure (model → guided practice → game → independent application → exit ticket) can be reused for subtraction, place value, or measurement by swapping manipulatives, story contexts, and practice tasks.
