Welcome to level 3 ### Welcome to level 3 By the end of this lesson, you can: * Save multiple items in a variable, this is called a list. * Create a story in which random things will happen. * Create a drawing in which random thing will be drawn. <aside class="notes"></aside>

Making a list ### Making a list You make a list with `is`. Separate the items on your list with a comma. <iframe class="fragment" src="/render_code/3?code=animals%20is%20dogs%2C%20cats%2C%20kangaroos"></iframe> <aside class="notes">Ask the students to write down an example of a list of their own.</aside>

At random ### At random You can use the list with the `at` `random` keyword. The computer will randomly pick one item of the list. Every time you run this code the output will differ. <iframe class="fragment" src="/render_code/3?code=animals%20is%20dogs%2C%20cats%2C%20kangaroos%0Aprint%20animals%20at%20random"></iframe> <aside class="notes">Run the code a couple of times and show the students that the output is different every time.</aside>

At random in a sentence ### At random in a sentence You can use the `at` `random` keyword in a sentence as well. <iframe class="fragment" src="/render_code/3?code=animals%20is%20dogs%2C%20cats%2C%20kangaroos%0Aprint%20My%20favorite%20animal%20is%20animals%20at%20random"></iframe> <aside class="notes">Again, show the students that the output changes when the code is run a couple of times. You can also change the order of the words, to show that `print animals at random are my favorite animal` is allowed too. Now ask your students to write down a print and at random keyword beneath the list they made and swap their code with another student. Let the other student predict a possible output for the program. Shortly discuss some answers in class.</aside>

Let's get started! ### Let's get started! Let's get started with the adventures! <aside class="notes">Let's work on teh first adventures!</aside>

Add to ### Add to You can add items to a list with the `add` `to` keyword. <iframe class="fragment" src="/render_code/3?code=animals%20is%20dog%2C%20cat%2C%20kangaroo%0Aadd%20sheep%20to%20animals%0Aprint%20I%20choose%20animals%20at%20random"></iframe> <aside class="notes">The students will hopefully notice that it doesn't really make sense to use the add to keyword this way, because you could have just put sheep in the list to start with. The next slide will show how to use the add to in combination with an ask and a variable, to make the program interactive.</aside>

Add to ### Add to You can choose what to add to the list or you can use the `add` `to` keyword in combination with the `ask` keyword. This way you can let the player decide what to add to the list to make the program interactive. <iframe class="fragment" src="/render_code/3?code=animals%20is%20dog%2C%20cat%2C%20kangaroo%0Alike%20is%20ask%20What%20is%20your%20favorite%20animal%3F%0Aadd%20like%20to%20animals%0Aprint%20I%20choose%20animals%20at%20random"></iframe> <aside class="notes">Run the program multiple times to show that the animal that was picked is now added to the list. The blue box that appears in your output screen shows you the variables you've used and what they have been set to.</aside>

Remove from ### Remove from The opposite of the `add` `to` keyword is the `remove` `from` keyword. This keyword removes an item from a list. <iframe class="fragment" src="/render_code/3?code=animals%20is%20dog%2C%20cat%2C%20kangaroo%0Adislike%20is%20ask%20What%20animal%20do%20you%20not%20like%3F%0Aremove%20dislike%20from%20animals%0Aprint%20I%20choose%20animals%20at%20random"></iframe> <aside class="notes">Once the students understand the add to, they will probably pick up the remove from keyword pretty easily. Make exercise 4 and 5.</aside>

Debugging ### Debugging Let's debug this code! <iframe class="fragment" src="/render_code/3?code=music_genres%20is%20rock%2C%20pop%2C%20metal%2C%20indie%2C%20jazz%0Achosen_genre%20is%20music%20at%20random%0Aprint%20Let%27s%20listen%20to%20chosen%20genre%0Anice%20ask%20Do%20you%20like%20that%20genre%3F%0Aremove%20chosen_genre%20from%20chosen_genre%0Asecond_choice%20is%20music_genres%0Aprint%20or%20do%20you%20prefer...%20second_choice%20at%20random%0Aremove%20second_choice%20to%20music_genres%0Aprint%20I%20like%20music_genre%20random%20best%21"></iframe> <aside class="notes">Model how to use the debugger and the eye icon.</aside>

Let's get to work! ### Let's get to work! Enjoy the adventures in level 3! <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 how to use quotation marks! One step closer to real python code! <aside class="notes"></aside>