Welcome to level 5 ### Welcome to level 5 By the end of this lesson, you can: * let the computer react to different input. * use if and else keywords <aside class="notes"></aside>

if ### if The `if` keyword allows you to choose between two options. <iframe class="fragment" src="/render_code/5?code=name%20is%20ask%20%27what%20is%20your%20name%3F%27%0Aif%20name%20is%20Hedy%20print%20%27nice%27"></iframe> <aside class="notes">Show how in this example the computer will print 'nice' if the given answer is Hedy. If the answer is not Hedy, the computer will do nothing.</aside>

Don't forget to print ### Don't forget to print When using the `if` keyword, don't forget to use the `print` keyword. This code will not work! <iframe class="fragment" src="/render_code/5?code=if%20name%20is%20Hedy%20%27nice%27"></iframe> <aside class="notes">Run the code and fix the bug as in the next slide.</aside>

Conditionals ### Conditionals The code that follows after an if-condition is called a conditional. <iframe class="fragment" src="/render_code/5?code=if%20name%20is%20Hedy%20print%20%27nice%27"></iframe> <aside class="notes">Ask the students what they think the conditional is. Here it is: 'print 'nice'.'</aside>

else ### else When using an `if` keyword, you can also add an `else` keyword. <iframe class="fragment" src="/render_code/5?code=if%20name%20is%20Hedy%20print%20%27nice%27%20else%20print%20%27boo%21%27"></iframe> <aside class="notes">Show the students how this code will give different output for different answers: If the answer is Hedy, the computer will print 'nice'. But if the answer is something else the computer will print 'boo'</aside>

Long lines ### Long lines You might have noticed that your lines can get very long when you have both an `if` and an `else` keyword. You can choose to separate keywords and put them on 2 lines, like this: <iframe class="fragment" src="/render_code/5?code=if%20name%20is%20Hedy%20print%20%27nice%27%0Aelse%20print%20%27boo%21%27"></iframe> <aside class="notes">If your students don't mind using two lines, we recommend that you'll start using two lines right away. This makes the program less messy and comes in handy in later levels.</aside>

Debugging ### Debugging Let's debug this code! <iframe class="fragment" src="/render_code/5?code=print%20Welcome%20to%20HedyAir%20Security%21%0Aboarding_pass%20is%20ask%20%27Do%20you%20have%20your%20boarding%20pass%3F%27%0Aif%20bording_pass%20yes%20print%20Great%21%0Aelse%20Please%2C%20get%20your%20boarding%20pass%20ready.%0Apassport%20is%20%27Can%20I%20see%20your%20passport%2C%20please%3F%27%0Aif%20passport%20is%20yes%20%27thank%20you%27%0Aelse%20%27You%20can%27t%20fly%20without%20a%20passport%27%0Adeclare%20is%20ask%20Do%20you%20have%20anything%20to%20declare%3F%0Aif%20declare%20is%20yes%0Aitem_to_declare%20is%20ask%20%27What%20would%20you%20like%20to%20declare%27%0Aelse%20Alright%0Aprint%20Thank%20you.%20Please%20head%20to%20gate%20A22.%27"></iframe> <aside class="notes"></aside>

Let's go! ### Let's go! Enjoy the adventures in level 5! <aside class="notes"></aside>

Let's review! ### Let's review! What did you learn today? <aside class="notes">Ask the students to list what they've learned today.</aside>

Let's review! ### Let's review! Which adventure did you like best? Why? Which adventure did you like least? Why? <aside class="notes">Ask the students for their opinion.</aside>

Show and tell! ### Show and tell! Would anyone like to show the class a program they've made? <aside class="notes">Let some students show their work to the class.</aside>

Sneak peek into the next level... ### Sneak peek into the next level... In the next level you'll learn what to do if you want 3 or more options instead of just 2 (if and else). <aside class="notes"></aside>