Data Collection & Pictographs — Counting, Representing, and Interpreting Data – Primary 1 Basic Science Lesson Note

Topic: Data Collection & Pictograph

Duration: 40 Minutes

Period: Single

Reference Materials:

• NERDC Mathematics Curriculum for Basic Education
• Primary 1 Mathematics Textbook
• Counters, flashcards, and charts

Performance Objectives:

By the end of the lesson, pupils should be able to:

1. Count numbers from 1 to 250 accurately.
2. Skip count in 2s, 5s, and 10s within 250.
3. Define and explain data collection.
4. Collect simple data from the class.
5. Represent and interpret data using pictographs.
6. Apply knowledge of counting and data handling in real-life situations.

Instructional Materials:

• Number chart (1–250)
• Counters, bottle tops, and sticks
• Flashcards for objects (fruits, animals, toys)
• Whiteboard and markers
• A sample pictograph chart

Content Development

Step 1: Introduction

Teacher asks pupils:

• “How many pupils are in this class?”
• “How many have blue or red shirts?”

Teacher explains:

“Today we will learn how to collect data and show it using pictures — this is called a pictograph.”

Step 2: Presentation

1. Counting Numbers 1–250

• Pupils practice counting aloud: 1, 2, 3, …, 100, …, 200, …, 250.
• Teacher emphasizes accuracy and sequence.

📊 Illustration (Partial Number Chart 201–250):

201 202 203 204 205 206 207 208 209 210

211 212 213 214 215 216 217 218 219 220

221 222 223 224 225 226 227 228 229 230

231 232 233 234 235 236 237 238 239 240

241 242 243 244 245 246 247 248 249 250

1. Skip Counting

• Count by 2s: 2, 4, 6, …, 250
• Count by 5s: 5, 10, 15, …, 250
• Count by 10s: 10, 20, 30, …, 250

📘 Activity: Pupils practice skip counting using counters or bottle tops.

1. Definition of Data Collection

• Data: Facts, numbers, or information about something
• Data Collection: Gathering information to count, measure, or record
• Example: Counting the number of boys and girls in the class, the number of red, blue, or yellow balls.

1. Pictograph

• Pictograph: A chart using pictures or symbols to represent data.
• Each picture represents 1 or more objects.
• Easy way to read and understand data visually.

📘 Example:
Class Favorite Fruit (10 Pupils Sample)

1. Interpreting Pictographs

Questions pupils can answer from the pictograph:

1. Which fruit do most pupils like? → Orange
2. Which fruit do the least pupils like? → Banana
3. How many pupils like Apple and Banana together? → 3 + 2 = 5

Step 3: Class Activities

Class Exercise 1: Counting & Skip Counting

1. Count numbers from 201–220
2. Skip count in 5s from 50–100
3. Skip count in 10s from 100–150

Class Exercise 2: Data Collection & Pictograph

• Teacher asks pupils to count number of pencils, books, or colors of pens in the classroom.
• Pupils record the numbers and draw a pictograph using small symbols.

📘 Example Activity Table:

Step 4: Board Summary

Step 5: Evaluation (5 MCQs)

1. What is data collection?
   A. Drawing shapes B. Gathering information C. Counting money D. Reading a book
2. In a pictograph, each symbol represents ______
   A. Nothing B. One or more objects C. Colors D. Letters
3. Count by 5s: 10, 15, 20, ___, ___
   A. 22, 24 B. 25, 30 C. 23, 28 D. 24, 26
4. How many symbols represent 3 apples?
   A. 1 B. 2 C. 3 D. 4
5. Which is the largest number when skip counting by 10s from 10–50?
   A. 40 B. 50 C. 30 D. 20

Answer Key: 1(B), 2(B), 3(B), 4(C), 5(B)

Step 6: Conclusion

Teacher summarizes:

• Data helps us know numbers of things.
• Pictographs make data easy to read and understand.
• Skip counting makes counting faster.

Homework:

• Collect data about number of chairs, tables, and windows at home.
• Draw a pictograph to show your data.
• Practice counting from 200–250 and skip counting in 2s and 5s.