Programming a Floor Robot
Programming a Floor Robot
Lesson duration is: 50 minItems in this lesson
Programming a Floor Robot
Open with the idea that a robot only moves when we give it clear instructions. Keep language concrete and linked to movement in the classroom.
Our learning goal
I can give clear directional commands to program a floor robot and improve my instructions if they do not work.
This item has no instructions
What words make you think of giving a robot instructions?
Use this as a prior-knowledge activation after the learning goal. Accept everyday words such as go, stop, left, right, robot, buttons and instructions, then connect them to programming vocabulary.
About this lesson
This KS1 computing lesson explores Programming a Floor Robot. Pupils use directional commands to program a simple floor robot, test a route and improve the instructions when the robot does not reach its target. It is suitable for classroom teaching, independent practice or a clear recap of the topic.
The user requested this SEO introduction verbatim on its own slide near the start, so keep it exactly as written.
What is programming?
Programming means giving instructions.
A floor robot follows the instructions in order. It cannot guess what we mean.
Stress that computers and robots are precise. Link to everyday instructions such as getting ready or brushing teeth.
What we already know
Before we program a floor robot, it helps if we can:
follow simple instructions
use words like forwards, backwards, left and right
take turns and watch carefully
notice when something has gone wrong
This slide covers prior knowledge without turning into an activity. Briefly check understanding through teacher talk if needed.
Direction words
We use direction words to tell the robot how to move.
forwards
backwards
left
right
Clarify that turning left or right is different from moving forwards or backwards. Model with your own body if helpful.
Commands
A command is one instruction.
Examples:
move forwards one step
turn left
turn right
move backwards one step
Use the exact word 'command' consistently through the lesson. Keep examples short and concrete.
Instructions must be in order
The order matters.
forwards, turn right, forwards is not the same as turn right, forwards, forwards.
A robot follows each command one by one.
This is a key computing idea: sequence. Emphasise that changing the order changes the result.
A sequence
A sequence is a set of commands in the right order.
Good programming means choosing the right commands and putting them in the right sequence.
If you use physical command cards in class, link them directly to the idea of a sequence.
What is one instruction called?
a target
a command
a robot
a test
Checks the key vocabulary from slides 3 to 6. Distractors come from nearby lesson words pupils may confuse.
Complete the programming ideas
Programming means giving instructions. One instruction is a command. Commands in the right order make a sequence.
Reinforces the load-bearing vocabulary: instructions, command and sequence.
Planning a route
Before pressing go, we can plan.
look at the start
look at the target
count the moves
think about any turns
say the commands aloud
Planning before running the robot helps pupils avoid random guessing and supports debugging later.
Start and target
When we plan a route, we need to know:
where the robot starts
which way it is facing
where we want it to finish
Facing direction is often missed by younger pupils. Point it out clearly because it affects the first command.
Testing the program
After we enter the commands, we test the program.
Testing means watching what the robot really does, not just what we hoped it would do.
Use precise but age-appropriate wording. Testing is observing the actual result.
Checking each step
When we test, we can check:
Did the robot move the right way?
Did it turn at the right time?
Did it stop at the target?
Did it follow every command?
Encourage careful observation rather than rushing to press buttons again.
What should you check before pressing go?
the target only
the colours only
start, facing, target
the robot's name
Based on planning slides 9 to 12. The correct answer combines the three things named on the content slides.
Fill in the planning and testing words
Before we press go, we can plan the route. After we enter the commands, we test the program. Then we check each step carefully.
This echoes the lesson wording: plan, test and check each step.
When the route goes wrong
Sometimes the robot does not reach the target.
That does not mean we have failed. It means we need to look again at our commands.
Normalise mistakes as part of programming. This prepares pupils for debugging.
Debugging
Debugging means finding and fixing a mistake in a program.
We might need to:
change a command
add a missing command
remove a wrong command
put commands in a better order
Use the word 'debugging' repeatedly so pupils hear it in context, not as an isolated vocabulary item.
Improve and try again
Program → Test → Check → Fix → Test again
Programmers often try more than once. Each new try helps make the program better.
This simple cycle captures the core process of programming for KS1 without overcomplicating it.
Using what we know
To program a floor robot well, we:
choose clear commands
put them in order
test the route
debug if needed
This is a summary slide before application. Use it to connect all the key vocabulary into one routine.
Application task
Use a start point and a target on a mat.
Plan a sequence of commands for the floor robot. Test the route. If the robot does not reach the target, debug the program and improve it.
The user asked for an application activity. Keep it broad so it fits different classroom resources, such as Bee-Bots, Blue-Bots or paper grids.
Making it fit everyone
Extra support
use arrow cards
work with a shorter route
say each command aloud
have an adult model the first step
plan a longer route
include more turns
spot and fix a mistake independently
explain why the new sequence works
Extra challenge
The user requested differentiation. Present it as support and challenge options rather than labels for children.
If the robot misses the target, what do we do next?
start dancing
put it away
debug the program
ignore the mistake
Checks understanding of debugging from slides 13 to 16 in simple child-friendly language.
What might help fix the program?
change a command
add a command
remove a command
change the order
This item has no instructions
What does debugging mean?
Expected answer elements: pupils should mention that you look for the mistake and fix it, such as changing, adding, removing or reordering commands.
What is one thing you learned today?
Encourage pupils to say one thing they learned, such as command, sequence, testing or debugging. No single correct answer.
One word for what helped you most today
Useful for quick reflection on supports such as watching, planning, saying commands aloud, testing or using arrow cards.
How do you feel about programming a floor robot now?
This item has no instructions
Glossary
programming - giving instructions to a computer or robot
floor robot - a robot that moves across the floor by following commands
command - one instruction
sequence - commands put in the right order
test - try the program to see what happens
debugging - finding and fixing mistakes in a program
target - the place the robot is trying to reach
This item has no instructions
