Teaching Materials
What is new in this level?
In this first level of Hedy Advanced students learn to use indentation. This allows them to use multiple lines in an if-statement or repeat multiple lines. The students often enjoy this level very much, because it allows them to make more intricate programs. On the other hand, some students will struggle understanding when to use indentation and how to do it.
New in this level:
- Multiple lines after an
if,eliforelseby using indentation - Multiple lines after a
repeatby using indentation
- Slides Present the level, one concept at a time
Common mistakes
Students use the indentation wrong
Indentation is a new concept in this level, and for some students it might be hard to learn. Make sure they practise some simple examples before making a whole program with it.
repeat 3 times print 'hello'
This is the correct code:
repeat 3 times
print 'hello'
Students only repeat 1 line when they wanted to repeat multiple lines
For instance, in the code below the student wanted to take the drinks order of 3 people. But instead the program asked 3 times, but only wrote down one order.
repeat 3 times
drink = ask 'What would you like to drink?'
print drink
In the correct code the third line starts with indentation too. This way it belongs to the repeat block and therefore it will be repeated 3 times. Showing your students these differences can help them understand why we need indentation to make our programs work.
repeat 3 times
drink = ask 'What would you like to drink?'
print drink
Students want to nest if statements, or put if statements inside a loop
In this level students aren't allowed yet to put if statements inside other if statements or inside repeat loops.
In the next level this is allowed.
birthday = ask 'Is it you birthday?'
if birthday = yes
repeat 3 times
print 'Hip Hip Hooray!'
This is the correct code for this level:
birthday = ask 'Is it you birthday?'
if birthday = yes
print 'Hip Hip Hooray!'
print 'Hip Hip Hooray!'
print 'Hip Hip Hooray!'
Students make programs that take too long to run
In this level it's very easy to make programs that take a lot of time to complete. If the program takes too long, it'll be stopped, this with the intention to prevent straining the student's machine.
repeat 100 times
print 'How many times can I repeat this?'
Make sure the code doesn't take too long to execute
repeat 20 times
print 'This is enough'