Session 3 starters: boxes and Mad Libs at three fill levels

README.md

@@ -6,3 +6,12 @@ fill levels, and crib sheets for the python class.
 Students read this; they never push to it. A session's starter reaches a
 student by being fanned out into their own `python` repo before class, so the
 only command they run is `git pull`.
+
+## Session 3 — Sep 25 · Variables
+
+| File | Who |
+|---|---|
+| `boxes.py` | Everyone. Predict on paper first, then run. |
+| `madlibs_fox.py` | Most help: 3 of 5 input lines written, fill 2. |
+| `madlibs_owl.py` | Some help: story written, write the 5 input lines from comments. |
+| `madlibs_bear.py` | Least help: write the inputs and the story. |

boxes.py

@@ -0,0 +1,32 @@
+# BOXES
+#
+# Do NOT run this yet!
+# First, guess what each program prints. Write your guesses on your paper.
+# Then run it and check.
+
+
+print("--- Program 1 ---")
+pet = "cat"
+print(pet)
+
+
+print("--- Program 2 ---")
+pet = "cat"
+print("pet")
+
+
+print("--- Program 3 ---")
+pet = "cat"
+pet = "dog"
+print(pet)
+
+
+print("--- Program 4 ---")
+x = 5
+x = 7
+print(x)
+
+
+print("--- Program 5 ---")
+name = "Sam"
+print("Hi, Sam " + name)

madlibs_bear.py

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+# MAD LIBS — Bear
+#
+# You write the questions AND the story.
+#
+# A box (variable) is made like this:
+#     name = input("Type a name: ")
+#
+# A story line uses boxes like this:
+#     print(f"One day, {name} went to the store.")
+#
+# Run it with the play button ▶ (top right).
+
+
+# 1. Make at least 5 boxes. Ask for things like an animal, a food,
+#    a place, a silly word, a number.
+
+
+
+# 2. Write your story. At least 4 lines. Use every box at least once.
+#    Use one box two times.
+
+print()
+
+
+print("THE END")
+
+
+# BONUS 1: Ask for a number with int(input(...)).
+#          Do some maths with it inside the story, like {number * 100}.
+# BONUS 2: Make the story ask a question in the middle, then keep going.

madlibs_fox.py

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+# MAD LIBS — Fox
+#
+# The story is at the bottom. It is already written.
+# The story needs words. Each word goes in a box (a variable).
+#
+# 3 boxes are done for you. 2 are not.
+# Find the ____ lines and finish them. Copy the ones that are done.
+# If you see  NameError: name '____'  you missed a blank.
+#
+# Run it with the play button ▶ (top right).
+
+
+name = input("Type a name: ")
+animal = input("Type an animal: ")
+food = input("Type a food: ")
+
+place = ____         # Ask for a place. Copy a line above and change it.
+silly_word = ____    # Ask for a silly word.
+
+
+# ----- THE STORY -----
+# The f means: fill in the boxes.
+# {animal} means: open the box called animal and put its word here.
+
+print()
+print(f"One day, {name} found a giant {animal} in the {place}.")
+print(f"The {animal} was eating {food}.")
+print(f"It looked up and yelled, \"{silly_word}!\"")
+print(f"So {name} shared the {food}, and they became best friends.")
+print("THE END")
+
+
+# BONUS 1: Add one more line to the story. Use one of your boxes in it.
+# BONUS 2: Make a new box called color. Use it in the story.

madlibs_owl.py

@@ -0,0 +1,44 @@
+# MAD LIBS — Owl
+#
+# The story is at the bottom. It is already written.
+# It needs 5 boxes (variables). You make them.
+#
+# Here is how one box is made:
+#
+#     name = input("Type a name: ")
+#
+# Run it with the play button ▶ (top right).
+
+
+# 1. Make a box called name. Ask for a name.
+name = input("Type a name: ")
+
+# 2. Make a box called animal. Ask for an animal.
+
+
+# 3. Make a box called food. Ask for a food.
+
+
+# 4. Make a box called place. Ask for a place.
+
+
+# 5. Make a box called silly_word. Ask for a silly word.
+
+
+
+# ----- THE STORY -----
+# The f means: fill in the boxes.
+# {animal} means: open the box called animal and put its word here.
+
+print()
+print(f"One day, {name} found a giant {animal} in the {place}.")
+print(f"The {animal} was eating {food}.")
+print(f"It looked up and yelled, \"{silly_word}!\"")
+print(f"So {name} shared the {food}, and they became best friends.")
+print("THE END")
+
+
+# BONUS 1: Add two more lines to the story. Use your boxes.
+# BONUS 2: Ask for a number, like this:
+#              number = int(input("Type a number: "))
+#          Then use {number * 2} in the story. What happens?