Class 7 CT & AI — Algorithmic Thinking: Flowcharts, Grid Navigation & Logical Operations | Worksheet 2026-27
Flowcharts, grid navigation, and multi-step logical operations explained simply for Class 7 students. Includes full worksheet with 40 questions, MCQs and case studies.
Algorithmic Thinking 🧠
Flowcharts, Grid Navigation
& Logical Operations
Learn how to think like a computer — step by step, with flowcharts, maps, and fun logic puzzles!
An algorithm is a step-by-step set of instructions to solve a problem or complete a task. Just like a recipe tells you how to make a dish, an algorithm tells a computer exactly what to do — in order, one step at a time.
Real Life Example
Making Maggi noodles is an algorithm! Boil water → Add noodles → Wait 2 minutes → Add masala → Stir → Serve. Every step is in order!
Computer Algorithm
When you search on Google, an algorithm finds the best answer. When you play a game, an algorithm makes the enemy move. Algorithms are everywhere!
3 Properties of Algorithm
1. Clear: Every step must be simple and easy to understand.
2. Finite: It must have a definite end.
3. Correct: It must solve the problem!
A flowchart is a diagram that shows the steps of an algorithm using special shapes and arrows. Instead of writing steps in words, we draw them as a picture — making them easier to understand!
| Shape | Name | Used For | Example |
|---|---|---|---|
| Oval | Terminal | Start or End of flowchart | START / STOP |
| Rectangle | Process | An action or instruction | Add 5 to number |
| Diamond | Decision | YES or NO question | Is number > 10? |
| Parallel | Input / Output | Taking input or showing output | Enter your age / Print result |
| → Arrow | Flow Line | Shows direction of steps | Connects all shapes |
remainder = 0?
Print "EVEN"
Print "ODD"
Fig 1: Flowchart to check Even or Odd number
In grid navigation, we use a grid (like a chessboard) to move from one place to another following specific instructions. This teaches us to write precise step-by-step directions — a core part of algorithmic thinking!
Direction Commands
UP / DOWN / LEFT / RIGHT — These are the basic commands. Each command moves the character exactly ONE step in that direction.
Loop in Navigation
If you need to go RIGHT 4 times, instead of writing RIGHT, RIGHT, RIGHT, RIGHT — you can write REPEAT 4 times: RIGHT. That's a loop!
Obstacles
Sometimes there are walls or blocks on the grid. You must write alternative paths to avoid them — just like a GPS reroutes when there's traffic!
START
END
Algorithm: RIGHT, RIGHT → DOWN → DOWN → RIGHT, RIGHT → DOWN → RIGHT, RIGHT → Reach ⭐
🧱 = Wall (cannot pass) | 🟣 = Path taken | Robo must avoid all walls!
Multi-step logical operations means solving a problem by breaking it into smaller steps and using conditions (IF-THEN-ELSE) and loops (REPEAT). This is how all computer programs work!
IF-THEN-ELSE
IF it is raining THEN take an umbrella ELSE wear sunglasses. The computer makes decisions the same way!
LOOP (REPEAT)
If you want to print "Hello" 5 times, use a loop: REPEAT 5 times → Print "Hello". Much faster than writing it 5 times!
Sequence
Steps that happen one after another in order. Like getting ready for school: Wake up → Brush teeth → Get dressed → Eat breakfast → Go!
1. Sequence — Do steps in order
2. Selection — Make a decision (IF-ELSE)
3. Repetition — Repeat steps (LOOP)
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Flowcharts · Grid Navigation · Multi-Step Logical Operations | CBSE CT & AI 2025-26
Answer in ONE word or ONE sentence only.
Circle or tick the correct option.
Robo is a delivery robot in a 5×5 warehouse grid. It starts at position Row 1, Column 1 (top-left corner). The exit is at Row 5, Column 5 (bottom-right corner). There are walls at Row 1 Column 4, Row 2 Column 4, and Row 3 Column 2. Robo can only move RIGHT or DOWN. If it hits a wall, it must find a different path.
A school library uses an algorithm to help students find books. When a student enters the library: First, the system asks "Do you know the book name?" — If YES, it searches by name and shows the location. If NO, it asks "Which subject?" — then shows all books of that subject. Finally, it checks "Is the book available?" — If YES, the book is issued. If NO, it shows the return date.
A smart weather app uses an algorithm to give advice based on temperature. It reads the current temperature. If temperature > 40°C → it shows "Drink water and stay indoors 🌡️". If temperature is between 25°C and 40°C → it shows "Good weather, enjoy outdoors! ☀️". If temperature < 25°C → it shows "Wear warm clothes 🧥". The app checks the temperature every hour and repeats this process all day.
📌 Section A — Very Short Answers
✅ Section B — MCQ Answers
🔍 Section C — Case-Based Answers
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