Show students what code looks like with and without loops to motivate the reasons for using them.
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Comparing code, like the examples listed below, can help:
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students understand loops by mapping the code with them back to code without them.
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motivate loops by helping students see how they make the code easier to understand.
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Code Comparison Examples:
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Example code with while loop:
int count = 0;
while (count < 6) {
System.out.println("Count is: " + count);
count++;
} -
Example code with do while loop:
int count = 0;
do {
System.out.println("Count is: " + count);
count++;
} while (count < 6); -
Example code without loop (with iteration):
int count = 0;
System.out.println("Count is: " + count);
count++
System.out.println("Count is: " + count);
count++
System.out.println("Count is: " + count);
count++
System.out.println("Count is: " + count);
count++
System.out.println("Count is: " + count);
count++
System.out.println("Count is: " + count);
count++ -
Example code without loop:
System.out.println("Count is: " + 0);
System.out.println("Count is: " + 1);
System.out.println("Count is: " + 2);
System.out.println("Count is: " + 3);
System.out.println("Count is: " + 4);
System.out.println("Count is: " + 5);