Lesson Notes By Weeks and Term v3 - Primary 1
Whole numbers 1-5
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Whole numbers 1-5
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Subject: General Mathematics
Class: Primary 1
Term: 1st Term
Week: 1
Theme: Number And Numeration
This page supports the lesson note with a companion video and a short classroom-ready summary.
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Watch on YouTubesort and classify number of objects in a group or collection; identify number of objects in a group or collection; count correctly up to 5; write correctly number 1-5; arrange; numbers 1-5 in or der of the ir magnitudes (quantities)
This section provides a detailed breakdown of the concepts related to whole numbers 1-5, supported by Nigerian-contextualized examples. A. What are Whole Numbers? Whole numbers are simply the natural counting numbers (1, 2, 3, ...) and zero. For Primary 1, the focus is on numbers from 1 to
5. These numbers represent quantities of discrete items. B. Sorting and Classifying Objects Sorting involves separating a mixed collection of objects into different groups based on a common characteristic. Classifying is the act of naming these groups or categories.
Concept: To sort means to put things that are alike together. To classify means to give a name to what you have put together.
Method:
1. Observe a collection of items.
2. Identify a shared characteristic (e.g., colour, shape, type).
3. Separate the items into distinct piles or groups based on that characteristic.
4. Count the number of items in each sorted group (up to 5).
Example 1 (Nigerian Context): A basket contains 3 oranges and 2 mangoes.
Sorting: Separate the fruits into two groups: one group of oranges and one group of mangoes.
Classifying: Name the first group "Oranges" and the second group "Mangoes." Counting: Count 3 oranges and 2 mangoes.
Example 2: A teacher has a collection of 5 items: 1 blue pencil, 2 red erasers, 1 blue crayon, 1 red pen.
Sorting by colour: Group blue items together (1 blue pencil, 1 blue crayon). Group red items together (2 red erasers, 1 red pen).
Counting: There are 2 blue items and 3 red items. C. Identifying the Number of Objects in a Group This involves recognizing the quantity represented by a group of objects without necessarily counting them one by one, especially for small numbers. This is known as subitizing for very small numbers (1-3) but extends to quick recognition for 4-5 after some practice.
Concept: To know "how many" items are in a group by looking at them.
Method:
1. Present a group of objects (e.g., 3 stones).
2. Ask, "How many stones do you see?"
3. Students state the number.
Example: Show a picture of 4 children playing 'tinko-tinko'. Ask, "How many children are playing?" The expected answer is "4." D. Counting Correctly Up to 5 Counting correctly involves one-to-one correspondence, where each object is assigned one and only one number name in sequence.
Concept: Assigning one number word (one, two, three, four, five) to each object in a set, ensuring no object is counted twice or missed.
Method:
1. Line up the objects (e.g., 5 bottle tops).
2. Point to the first object and say "One."
3. Point to the second object and say "Two."
4. Continue this process until all objects are counted. The last number spoken is the total number of objects.
Example: Counting 5 fingers.
Touch thumb: "One" Touch index finger: "Two" Touch middle finger: "Three" Touch ring finger: "Four" Touch pinky finger: "Five" The total is "Five." E. Writing Correctly Numbers 1-5 This involves forming the numerals (symbols) that represent the quantities 1, 2, 3, 4, and
5. Concept: Learning to write the symbols for numbers. Proper formation ensures legibility.
Method (Step-by-step formation): 1 (One): Start at the top, draw a straight line down. (
Example: a straight stand like a tall Iroko tree trunk) 2 (Two): Start at the top, curve around and slant down to the right, then draw a horizontal line across the bottom. (
Example: like a duck swimming) 3 (Three): Start at the top, curve around to the middle, then curve around again to the bottom. (
Example: like two half-moons joined) 4 (Four): Start at the top, draw a slant line down to the middle, then a horizontal line to the right, then a long straight line down through the middle of the first horizontal line. (
Example: like a chair turned upside down) 5 (Five): Start at the top with a short horizontal line to the right, then a short vertical line down, then a curve to the left. (
Example: like a man with curve around to the middle, then curve around again to the bottom. (
Example: like two half-moons joined) 4 (Four): Start at the top, draw a slant line down to the middle, then a horizontal line to the right, then a long straight line down through the middle of the first horizontal line. (
Example: like a chair turned upside down) 5 (Five): Start at the top with a short horizontal line to the right, then a short vertical line down, then a curve to the left. (
Example: like a man with a cap and a big belly)
Practical application: Students write numbers in sand, on slates, or in exercise books. F. Arranging Numbers 1-5 in Order of Their Magnitudes (Quantities) This involves comparing different quantities and arranging them from smallest to largest (ascending order) or largest to smallest (descending order).
Concept: Understanding that numbers represent different "sizes" or amounts, and being able to put them in sequence based on these amounts. Method (Ascending Order - Smallest to Largest):
1. Given a set of numbers or groups of objects (e.g., 2, 5, 1).
2. Identify the group with the fewest objects (e.g., 1 object). This is the smallest number.
3. Identify the next smallest group (e.g., 2 objects).
4. Continue until the group with the most objects (e.g., 5 objects) is identified.
5. Place them in sequence: 1, 2,
5. Example 1 (Objects): Arrange groups of items: A) 3 pebbles, B) 1 leaf, C) 5 sticks.
Order: B (1 leaf), A (3 pebbles), C (5 sticks).
Example 2 (Numerals): Arrange the numbers 4, 1, 3. * Order: 1, 3,
4. This section outlines practical activities for teachers and students, designed for a typical Nigerian classroom setting using readily available materials.
A. Introduction (5-10 minutes)
Teacher Activity: Begin by engaging students with a familiar counting rhyme or song that involves numbers 1-5 (e.g., "One, two, buckle my shoe," adapted to local content like "One, two, pick a garden egg"). Or tell a short story about a child counting their possessions or market items.
Student Activity: Students participate in the rhyme/song, clapping or tapping their fingers to represent quantities. They listen attentively to the story, identifying numbers mentioned.
B. Development of Content Activity 1: Sorting and Classifying (15 minutes)
Teacher Activity: Present a collection of mixed local objects (e.g., 5 small stones, 3 mango seeds, 2 bottle tops, 4 small leaves). Ensure the total number of any one type does not exceed
5. Demonstrate sorting. For example, "I will put all the stones together here, all the leaves there." Ask students to identify characteristics used for sorting (e.g., "What did I put together here?"). Guide students to classify the sorted groups (e.g., "This group is 'stones', this is 'leaves'").
Student Activity: In small groups or individually, students are given mixed collections of objects (e.g., a tray with 5 different items like beans, maize, groundnuts, small stones, bottle tops). Students sort these objects into different groups based on type, colour, or size. They practice identifying and naming their sorted groups.
Activity 2: Identifying and Counting Objects (15 minutes)
Teacher Activity: Display various groups of objects (e.g., 1 pen, 3 books, 5 chalks) for a few seconds. Ask, "How many pens do you see?" "How many books?" Encourage quick responses (subitizing for smaller numbers). Lead a whole-class counting session using body parts (fingers, toes up to 5) or claps. Demonstrate one-to-one correspondence by slowly counting 5 objects, touching each object as a number word is spoken.
Student Activity: Students identify the number of objects quickly when displayed by the teacher. Students count their own fingers, toes, or classroom items (chairs, tables, windows) up to 5, using one-to-one correspondence. In pairs, students take turns counting a small collection of items for each other.
Activity 3: Writing Numbers 1-5 (15 minutes)
Teacher Activity: Model the correct formation of each numeral (1, 2, 3, 4, 5) on the chalkboard, explaining the strokes clearly (e.g., "Start from the top, go straight down for 1"). Use a large number chart with tactile numbers or trace numbers in sand for students to observe. Guide students to practice writing in the air, then on sand trays, then on individual slates or in their exercise books. Provide individual feedback on formation.
Student Activity: Students practice tracing numbers 1-5 in the air, then on sand or dust (if applicable in the classroom). Students write numbers 1-5 multiple times on their slates or in their exercise books, focusing on correct formation. Students can use playdough to form numbers.
Activity 4: Arranging Numbers 1-5 by Magnitude (10 minutes)
Teacher Activity: Place several groups of objects on a table, each group representing a different number from 1 to 5 (e.g., a pile of 2 stones, a pile of 5 seeds, a pile of 1 leaf, a pile of 4 beads). Ask students to identify which pile has the 'fewest' and which has the 'most'. Demonstrate arranging these piles from smallest to largest quantity. Write the numerals 2, 5, 1, 4 on the board and ask for volunteers to arrange them in ascending order.
Student Activity: Students work with small groups of objects, arranging them from the group with the smallest quantity to the group with the largest quantity (e.g., 1 bottle top, 3 pebbles, 5 sticks). Students practice arranging number cards (1-5) in correct sequence, both forwards and backwards.
C. Conclusion (5 minutes) * Teacher Activity: Recap the main points of the lesson by asking quick questions: "Who can show me 3 fingers?" "What number comes after 4?" "What did we learn and ask for volunteers to arrange them in ascending order.
Student Activity: Students work with small groups of objects, arranging them from the group with the smallest quantity to the group with the largest quantity (e.g., 1 bottle top, 3 pebbles, 5 sticks). Students practice arranging number cards (1-5) in correct sequence, both forwards and backwards.
C. Conclusion (5 minutes)
Teacher Activity: Recap the main points of the lesson by asking quick questions: "Who can show me 3 fingers?" "What number comes after 4?" "What did we learn to do with objects today?" * Student Activity: Students respond to questions and summarize what they have learned, demonstrating their understanding.
Understanding whole numbers 1-5 is deeply integrated into a Nigerian child's daily life, fostering practical numerical literacy.
Market Transactions and Trade: Children often accompany adults to local markets (e.g., 'Oja' or 'Kasuwa'). They can assist in counting small quantities of goods like oranges, garden eggs, groundnut portions, or small fish (e.g., "Mama, this seller has 3 mangoes, but that one has 5"). They can also count small denominations of money (e.g., N5, N10, N20 notes, though N1-N5 coins are rarer but conceptually relevant). This helps them develop an early sense of quantity and value.
Household Activities and Sharing: At home, children frequently encounter situations requiring counting. They can count family members at a meal, the number of plates needed, how many siblings are present, or how many pieces of yam or plantain they have on their plate. For example, ensuring each of 2 children gets 1 orange, or confirming there are 5 chairs in the sitting room. This fosters concepts of fairness and resource distribution.
Community and Play: Children interact with peers in their community. They count friends playing a game like 'Boju Boju' (hide and seek), or 'Tinko-Tinko'. They count the number of players on a local football team (if small enough), or even count the number of domestic animals (e.g., 2 goats, 3 chickens) in a compound. This integrates numerical skills into social interactions and environmental awareness.