Apps Design and Development

1st Partial Exam

What is a variable?

When and how should you use a variable?

Which are the rules to name a variable?

What is camelCase?

Select the only valid variable name :

a) street.name b) #product
c) 3rd semester d) appName

Name the basic components of a Thunkable app

Which are the prefixes to name each Thunkable component?

What is data validation?

Why is data validation necessary?

Which are the basic validation rules?

What are the results when a condition includes the keywords AND / OR / NOT?

Where should be set the blocks to calculate results when validating?

What type of feedback could be given in Thunkable when data is invalid?

What is peventive design?

How do you remove the red border shown in a text input after validating?

What is a list in Thunkable?

What's the index in a list?

How can you show a list in the screen?

How can we get the index or item that was clicked in a list?

How can you add a new element into a list?

How can you delete an element from a list?

How can you confirm if the user wants to delete?

How can you access a value saved in a list?

How can you keep a running total variable

What are the most common errors when developing Thunkable apps?

What makes an app to crash?

Help for the Grades app:
Defining variables

Help for the Grades app:

Help for the Grades app:
Adding a subject

Help for the Grades app:
Removing a subject