COMPUTER : Chapter - 4 Logical Thinking (Notebook Work)

 CHAPTER -4

LOGICAL THINKING

 

• New Words:

1. Complex

2. Approach

3. Sequence

4. Goal

5. Information

6. Condition

7. Solution

8. Tasks

• Keywords:

1. Complex: having many steps.

2. Approach: a way to deal with something.

3. Sequence: the order of steps.

4. Monitor: to check the progress.

5. Respectively: in the given order.

• Blanks:

1. To perform a complex task, you need to break it into simple, smaller steps.

2. The goal is what you want to achieve after completing a task.

3. Conditions are the rules that you need to follow while performing a task.

4.A, AA, AB, AC, AD.

5.4, 6, 9, 13, 18, 24.

• NOTES:

1. Goal: a goal is what you want to achieve at the end of the task.

2. Information: information refers to the other details given in the task to be performed.

3. Conditions: conditions are rules that you need to follow while performing a task.

 

 

Ø stepwise approach to performing task

 

These real-life examples follow a clear stepwise approach that helps students break down more complex tasks into manageable steps. By focusing on reading carefully, identifying important information, planning, performing the task, and checking their work, students will learn how to approach and solve everyday problems with confidence!

 

1. Question: What do plants need to grow?

·  Stepwise Answer:

1. Read the Question: The question is asking what plants need to grow.

2. Identify Important Information: We are talking about plants and their needs.

3. Plan the Answer: Think about what you know plants need (like water, sunlight, and soil).

4. Solve: Plants need sunlight, water, and soil to grow.

5. Write the Answer: Plants need sunlight, water, and soil to grow.

6. Check: Plants really do need these things. The answer is correct.

2. Question: You have 20 rupees. You want to buy 3 toys that cost 5 rupees each. How much money will you have left after buying the toys?

Stepwise Answer:

1. Read the Question: You need to find out how much money you will have left after buying toys.

2. Identify Important Information: You have 20 rupees, each toy costs 5 rupees, and you want to buy 3 toys.

3. Plan How to Solve It: First, calculate how much all 3 toys will cost. Then, subtract that from 20 rupees to find how much money you’ll have left.

4. Perform the Task: Multiply 5 rupees (cost of one toy) by 3 (number of toys):
5 × 3 = 15 rupees.
Now, subtract the total cost from your original amount:
20 − 15 = 5 rupees.

5. Write the Answer: After buying the toys, you will have 5 rupees left.

6. Check Your Work: Multiply 5 × 3 = 15, then 20 − 15 = 5. The answer is correct.

3. Question: You have 3 shelves. On each shelf, you can fit 5 books. How many books can you fit on all 3 shelves?

Stepwise Answer:

1. Read the Question: You need to find out how many books can fit on all 3 shelves.

2. Identify Important Information: There are 3 shelves, and each shelf can fit 5 books.

3. Plan How to Solve It: To find out the total number of books, you need to multiply the number of shelves by the number of books each shelf can hold.

4. Perform the Task: Multiply 3 shelves × 5 books per shelf = 15 books.

5. Write the Answer: You can fit 15 books on all 3 shelves.

6. Check Your Work: Multiply 3 × 5 = 15. The answer is correct.

 

 

Ø Problem solving using logical thinking

1. Question:

Look at the number pattern below. What number should replace the question mark?

2, 4, 6, 8 ? 12, 14

è Stepwise Solution:

1. Identify the Pattern: Notice the numbers increase by 2 each time:

o 2 → 4 (add 2)

o 4 → 6 (add 2)

o 6 → 8 (add 2)

2. Plan How to Solve It: To continue the pattern, we should add 2 to the last known number (8).

3. Perform the Task: 8 + 2 = 10.

4. Write the Answer: The missing number is 10

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2. Question:
There are 3 baskets. The first basket has 4 apples, the second has 5 bananas, and the third basket has 6 oranges. How many pieces of fruit are there in total?

à Stepwise Solution:

1. Identify the Important Information:

o First basket: 4 apples

o Second basket: 5 bananas

o Third basket: 6 oranges

2. Plan How to Solve It: We need to add the number of apples, bananas, and oranges together.

3. Perform the Task: 4 apples + 5 bananas + 6 oranges = 15 fruits in total.

4. Write the Answer: There are 15 pieces of fruit in total

3. Question:
Four friends—Alex, Ben, Carla, and Daisy—are sitting in a row.

· Alex is sitting next to Ben.

· Daisy is sitting at the end of the row.

· Carla is sitting next to Daisy.
Where is everyone sitting?

Stepwise Solution:

1. Identify the Important Information:

o Alex is next to Ben.

o Daisy is at the end of the row.

o Carla is next to Daisy.

2. Plan How to Solve It:

o Let’s place Daisy at one end of the row (we don’t know if it’s the left or right end yet).

o Carla must be next to Daisy. So, if Daisy is at the right end, Carla will sit next to her.

o Alex is sitting next to Ben. Since Alex and Ben must sit next to each other, they will fill the remaining spots.

3. Perform the Task:

o If Daisy is at the right end, Carla will sit next to her on the left.

o Alex and Ben will fill the remaining two spots and must sit next to each other. So, Alex will sit next to Ben.

4. Write the Answer:

o From left to right: Alex, Ben, Carla, Daisy.

5. Check Your Work:

o Alex and Ben are sitting next to each other? ✔️

o Daisy is at the end of the row? ✔️

o Carla is next to Daisy? ✔️
The seating arrangement is correct.