Lesson Notes By Weeks and Term v5 - Grade 1

Lesson Video

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Performance objectives

• Collect and sort information.
• Show information using pictures (pictographs).
• Understand what our pictographs tell us.
• Revise counting up to 20.
• Practice adding and subtracting up to 10.

Lesson summary

This week in Grade 1 Mathematics, we will be focusing on data handling, a skill that helps us understand and organize information around us. We’ll also be revising topics we have covered so far to make sure we remember everything we’ve learned. Data handling is important because it helps us make sense of the world around us. For example, we can use data to see which fruits are the most popular in our class or which colors we see most often in the playground. This helps us understand what other people like and what is common in our environment.

Lesson notes

Data Handling: Making Sense of Information Data handling is all about collecting information (data), organizing it, and then understanding what the information tells us. We can think of it as becoming little detectives!

Collecting Data: This means finding out information. We can do this by asking questions ("What's your favorite fruit?") or by looking around us and observing ("How many red cars are there?").

Sorting Data: Once we have the information, we need to organize it. Sorting means putting things into groups based on what they have in common. For example, we can sort fruits into "apples," "bananas," and "oranges." Representing Data: After sorting, we can show our data in a simple picture or chart. This is called a representation. We’ll use pictographs this week, which are pictures that stand for things. Each picture represents one item.

Interpreting Data: The last step is to look at our representation and understand what it means. We can ask questions like, "Which group has the most?" or "Which group has the least?" Example 1: Favorite Fruits Let's say we asked 10 learners in our class about their favorite fruit.

Here's what they said: Apple: 3 learners Banana: 5 learners Orange: 2 learners Now, we can create a pictograph: ``` Apple: 🍎 🍎 🍎 Banana: 🍌 🍌 🍌 🍌 🍌 Orange: 🍊 🍊 ``` Each fruit picture represents one learner.

Why it works: Each 🍎 represents one student who likes apples, and so on.

How to interpret: We can easily see that bananas are the most popular because there are the most banana pictures.

Example 2: Colors of Cars Let's say we counted the colors of cars passing by our school.

We saw: Red: 4 cars Blue: 2 cars White: 6 cars Pictograph: ``` Red: 🚗 🚗 🚗 🚗 Blue: 🚗 🚗 White: 🚗 🚗 🚗 🚗 🚗 🚗 ``` Why it works: We use the car emoji as the representation of our observation of colors.

How to interpret: We can see that white cars are the most common.

Revision: Numbers and Operations Let’s revise numbers up to 20 and practice adding and subtracting numbers within

1

0. Counting to 20: Practice counting forwards and backwards from any number between 0 and

2

0. Use concrete objects like beads, stones, or counters to help.

Addition: Putting things together. For example, 3 + 2 =

5. Use your fingers or draw pictures to help. Imagine you have 3 marbles and your friend gives you 2 more. Now you have 5 marbles in total!

Subtraction: Taking things away. For example, 5 - 2 =

3. Use your fingers or draw pictures to help. Imagine you have 5 sweets and you eat

2. Now you have 3 sweets left!

Number Lines: Use a number line to help with addition and subtraction. For addition, move to the right. For subtraction, move to the left.

Example 3: Addition and Subtraction Addition: Thando has 4 crayons, and Sipho gives her 3 more. How many crayons does Thando have now? 4 + 3 = 7 Thando has 7 crayons.

Subtraction: Aisha had 8 sweets, and she ate

2. How many sweets does Aisha have left? 8 - 2 = 6 Aisha has 6 sweets left. Guided Practice (With Solutions)

Question 1: We asked 5 learners which pet they like best. 2 said they like dogs, 1 said they like cats, and 2 said they like birds. Draw a pictograph to show this data.

Solution: ``` Dog: 🐶 🐶 Cat: 🐱 Bird: 🐦 🐦 ``` Explanation: Each animal picture represents one learner's choice. We draw two dog pictures because two learners like dogs, one cat picture because one learner likes cats, and two bird pictures because two learners like birds.

Question 2: Look at the pictograph below showing the number of rainy days in a week. ``` Monday: 🌧️ Tuesday: 🌧️ 🌧️ Wednesday: Thursday: 🌧️ Friday: 🌧️ 🌧️ 🌧️ ``` How many rainy days were there on Friday? How many rainy days were there on Tuesday? Which day had the most rainy days?

Solution: Friday: 3 rainy days Tuesday: 2 rainy days Friday had the most rainy days.

Explanation: We simply count the rain cloud pictures for each day. Friday has three rain clouds, Tuesday has two, and therefore Friday has the most.

Question 3: Solve: 6 + 2 = ? and 9 - 3 = ?

Solution: 6 + 2 = 8 9 - 3 = 6 Explanation: For 6 + 2, start at 6 and count forward 2 places. For 9 - 3, start at 9 and count backward 3 places. You can use your fingers, drawings or a number line to help. Independent Practice (Questions Only) We counted the number of learners wearing different colored shirts. 3 are wearing red, 5 are wearing blue, and 2 are wearing green. Draw a pictograph to represent this data. Use a circle (⚪) to represent each learner. Look at the pictograph showing the number of sunny days last month. ``` Week 1: ☀️ ☀️ ☀️ Week 2: ☀️ ☀️ Week 3: ☀️ ☀️ ☀️ ☀️ Week 4: ☀️ ``` Which week had the most sunny days? Which week had the least sunny days? How many sunny days were there in Week 2? Nomsa has 7 beads. She gives 3 to her friend. How many beads does Nomsa have left? John has 5 apples, and Mary gives him 4 more. How many apples does John have in total? Write the numbers from 1 to

2

0. What comes before 10? What comes after 15?

Which is bigger: 12 or 18?