📚 Topic Summary
In JavaScript, a data type tells the computer what kind of value a piece of information is. Think of it like labeling boxes: one box might hold words (a string), another might hold numbers, and another might hold whether something is true or false (a boolean). Understanding these types is crucial for writing programs that work correctly and do what you expect them to!
This worksheet focuses on three basic but very important data types: Strings (text), Numbers (integers and decimals), and Booleans (true/false values). Get ready to test your understanding!
🧮 Part A: Vocabulary
Match the terms with their definitions:
| Term |
Definition |
| 1. String |
A. A value that can be either true or false. |
| 2. Number |
B. A sequence of characters, like words or sentences. |
| 3. Boolean |
C. A whole number (integer) or a decimal number (floating-point). |
| 4. Variable |
D. A named storage location that can hold a value. |
| 5. Data Type |
E. The kind of value that can be stored and manipulated in a program. |
(Match the numbers with the letters)
✍️ Part B: Fill in the Blanks
Complete the following paragraph using the words: string, number, boolean, variable.
In JavaScript, you can store information in a __________. If you want to store text, you'll use the _________ data type. For storing numerical values like ages or scores, you use the __________ data type. And if you want to store whether a condition is true or false, the __________ data type is your best choice.
🤔 Part C: Critical Thinking
Explain, in your own words, why understanding data types is important when writing JavaScript code. Give an example of what could go wrong if you don't use the correct data type.