4.7. Group Work - Remainder Operator (%)

It is best to use a POGIL approach with the following. In POGIL students work in groups on activities and each member has an assigned role. For more information see https://cspogil.org/Home. This page is based on a POGIL activity from Helen Hu at that site.

Run the following code to see what it prints.

public class ModModl1 { public static void main(String[] args) { System.out.println(9 % 4); System.out.println(10 % 4); System.out.println(11 % 4); System.out.println(12 % 4); System.out.println(13 % 4); System.out.println(14 % 4); System.out.println(15 % 4); System.out.println(16 % 4); } }

Look at the expressions in the code above and the output. Then answer the following questions.

4.7.1. Going Beyond Remainder 4

4.7.2. Look Deeper

4-7-6: Look at the code above for the numbers such that n % 4 returns 1. How do these numbers differ from the ones that return zero?

4.7.3. More Practice

4.7.4. Long Division with a Remainder

Consider how you did long division in elementary school where you determined what number goes evenly into another number and the remainder.

4.7.5. Dividing Evenly

Imagine if you were given candies to evenly divide amoung members of a group of four people. Follow kindergarten rules where every group member gets the same number of candies and the extras go back to the teacher.

4.7.6. Describe the Remainder (%) Operator

4-7-14: Describe what % does in your own words. Use complete sentences.

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