Embedded Files
Lesson Objective
Lesson Objective
- Recognise when an algorithm needs debugging
- Understand conditions
In these lessons the students will understand how coding is used in many forms of travel. They will understand how computers are coded to make decisions based on a set of criteria.
They will then build a traffic light system using the SAMs Labs.
They will start to develop their skills with Conditions.
Starter Challenge
Starter Challenge
Using the Chromebooks and Google Classroom, students create a collaborative document that lists different ways technology is used in travel. This is a shared document set up by the teacher. Watch the video opposite to see how to set this up in Google Classroom.
Condition Challenge
Condition Challenge
- Explain that conditional statements are very common in every day life.
- Explain how we often give instructions about 'What to do if...'.
- Explain that we sometimes see instructions that are more like if-else statements.
For example, at the supermarket if you have less than 5 items in your basket, you can use the express checkout, else you need to go in the longer queue.
- Tell students to work in pairs and plan their ideal travel destination. If they were going on vacation, what kind of place would they like to visit? To help them figure out where to go, they should come with at least five conditions that their destination needs to meet - for example, that the destination "is warm" or "is near the seaside".
- As the students to think of different destinations, such as Paris or New York and find out if each destination fits their conditions. They can use the internet to find out what the weather is like in different locations.
- Students can test their destination by checking each condition and labelling them TRUE or FALSE. Does the destination meet all five conditions? Why does the Great Pyramid of Giza not fit? If the destination passes the test they're ready to go on a virtual trip.
- Using Google Earth or Maps on the iPad the students can go to their destinations, take a screen shot and upload the screen shot to Google Slides.
- Students can then create their own virtual tour using Google Slides from an assignment in Google Classroom. They would use their conditions to explain why they choose their destination.
- Students can then share their learning with others in the classroom who can then peer assess and discuss as a class.
See the example on the right.
An if statement tells us what to do if a condition is true.
An if-else statement tells us what to do if a condition is true and what to do if it's not.
A Condition is something we can check to tell if it's true or false.
A Conditional Statement gives an instruction to do something when certain conditions are true.
Example of some of the conditions the students could use
- Is it warm?
- Is it cold?
- Does the hotel have a pool?
- Does it have parking?
Example of Ideal Destination Conditions
- It is warm
- It is sunny
- It has a historic landmark
- It is near a river
- It is in the Northern Hemisphere
- It is near a mountain
- It is in a national park
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