Sequence in programs

Understanding that the order of instructions matters in a program: Step 1, Step 2, Step 3

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Try each question. If you're stuck, leave it and come back. The answer key is on the last page.

1
What does 'sequence' mean in a program? A) The order the instructions run in B) How fast the computer runs C) The colour of the screen D) The name of a game
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2
True or false? In a program, the order of instructions does not matter. A) True B) False
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3
Put these getting-dressed steps in the right order. Put these in order: Put on socks, Put on shoes, Tie laces
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4
How do programs usually run, unless they branch or loop? A) From top to bottom B) From bottom to top C) Randomly D) Backwards
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5
Put these steps for sending a message on a tablet in order. Put these in order: Open the messaging app, Choose who to send to, Type the message, Press send
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6
Complete the sentence about sequence. In a program, the ___ of the instructions matters.
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7
True or false? If you swap two steps in a program, the result can change. A) True B) False
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8
A program says: 1. Move forward. 2. Turn left. 3. Move forward. What is this an example of? A) A sequence of instructions B) A picture C) A song D) A computer screen
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9
Put these steps for drawing a square with a turtle program in order. Put these in order: Move forward 50, Turn right 90, Move forward 50, Turn right 90, Move forward 50, Turn right 90, Move forward 50
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10
Which step is missing from this sequence: get bowl, ___, pour milk, eat? A) Add cereal B) Wash bowl C) Sleep D) Turn off light
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Answer key

Sequence in programs · for parents and teachers

1
The order the instructions run in
Sequence is the order in which instructions are carried out in a program.
2
False
False. The order matters very much. Changing the order can change the result of the program.
3
Put on socks, Put on shoes, Tie laces
Sequence is important: socks before shoes, shoes before laces.
4
From top to bottom
Programs run from the top instruction down to the bottom, one step at a time.
5
Open the messaging app, Choose who to send to, Type the message, Press send
Each step must happen in the right order for the message to be sent.
6
order
The order (sequence) of instructions matters. Swapping steps can change what the program does.
7
True
True. Changing the order of instructions in a program often changes what the program does.
8
A sequence of instructions
A list of numbered steps that run in order is a sequence of instructions.
9
Move forward 50, Turn right 90, Move forward 50, Turn right 90, Move forward 50, Turn right 90, Move forward 50
To draw a square we move forward then turn right four times. Later you will learn to use a loop for this!
10
Add cereal
Cereal goes in the bowl before milk, then you eat.