Computer Science
Kindergarten
20 min
Tall and Short: Measuring Height
Comparing the height of two objects and determining which is taller or shorter.
Tutorial Preview
1
Introduction & Learning Objectives
Learning Objectives
Identify which of two objects is 'taller'.
Identify which of two objects is 'shorter'.
Use a mouse to click and drag objects for comparison.
Follow a simple 2-step sequence to compare objects on a screen.
Sort three objects from shortest to tallest.
Use the words 'taller than' and 'shorter than' to describe objects.
Look at the giraffe 🦒 and the mouse 🐭! Who do you think is taller?
Today, our computer will help us see who is tall and who is short. We will learn how to compare things. It is like a fun game! 🎮
Real-World Applications
Lining up from shortest to tallest in class.
Putting big books 📚 on the bottom shelf.
Seeing if you are tall enough for a fun ride.
Building a tall tower with blocks.
2
Key Concepts & Vocabulary
TermDefinitionExample
TallTall means big from bottom to top.A big tree 🌳 is tall.
ShortShort means little from bottom to top.A small flower 🌸 is short.
CompareCompare means to look at two things.Let's compare an apple 🍎 and a pear 🍐.
Taller ThanOne thing is bigger than the other.The giraffe 🦒 is taller than the cat 🐈.
Shorter ThanOne thing is smaller than the other.The ant 🐜 is shorter than the dog 🐕.
Same HeightTwo things are the same size.These two apples 🍎🍎 are the same height.
3
Core Syntax & Patterns
The Line Up Rule
1. Put things on the same line. 2. Look at their tops.
To compare, we must start them at the same spot. It's fair!
The Top Points Rule
The one with the highest top is TALLER. 👍
The computer looks at the very top to decide who is taller.
The Bottom Points Rule
The one with the lowest top is SHORTER. 👇
The computer looks at the very top to decide who is shorter.
4 more steps in this tutorial
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Challenging
A red block tower is 4 blocks tall. A blue block tower is TALLER than the red one. How many blocks could be in the blue tower?
A.2 blocks
B.3 blocks
C.4 blocks
D.6 blocks
Challenging
A chair is shorter than a table. The table is shorter than the door. Which of these is the TALLEST?
A.The chair
B.The table
C.The door
D.We don't know
Challenging
If you have a very short plant sprout 🌱 and you give it water and sunshine every day, what will most likely happen?
A.It will get even shorter
B.It will grow taller
C.It will turn blue
D.It will stay the same forever
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