# Activities to Teach Students About Perimeter With Decimal Side Lengths

Perimeter is a fundamental concept in mathematics which deals with the distance around a closed figure or shape. A perimeter can be defined as the sum of the lengths of all the sides of a polygon. Teaching perimeter can be fun in various ways, especially when dealing with decimal side lengths. Below are some activities teachers can utilize to teach students about perimeter with decimal side lengths.

1. Notes and examples

The first step in teaching perimeter with decimal side lengths is to provide notes for students to take home. This will serve as a reminder of everything they have learned during class. Notes can be created in various formats, from bullet points to visuals, ensuring that the necessary formulas and examples are covered. Once this is done, the teacher can test the students’ understanding by providing them with examples that would require them to find the perimeter of a polygon using decimal side lengths.

2. Drawing polygons with decimal side lengths

The second step to teaching perimeter with decimal side lengths is to ask students to draw different polygons with decimal side lengths. This will help students visualize the distance around the polygon, helping them understand the concept of perimeter. Make sure to provide clear instructions, such as: “Draw a rectangle with a length of 2.5 and a width of 1.5.” Allow students to experiment with different shapes so they can get a variety of examples.

3. Measuring and cutting string

The third activity deals with using hands-on materials to determine the perimeter of polygons with decimal side lengths. Teachers can provide students with string and ask them to measure the length of each side of a polygon and then add these measurements to get the perimeter. This would require students to add decimal numbers, further challenging themselves and reinforcing their understanding of perimeter. For an added challenge, students can work on constructing their own polygons using straws and string to find the perimeter.

4. Perimeter scavenger hunt

A fourth activity to teach perimeter with decimal side lengths is to stage a scavenger hunt around the schoolyard. Provide students with clues that indicate a particular shape, and they would have to identify the shape and find the perimeter of that shape. This scavenger hunt would help students understand the practical use of perimeter and would provide an engaging and interactive way of learning.

5. Computer games and interactive software

Finally, computer games and interactive software can be used to reinforce the concept of perimeter with decimal side lengths. Many online activities are available to teachers, and these tools can provide an engaging supplement to in-class exercises. Games could include finding the perimeter of different shapes or using visualization tools to help students understand and remember the concept.

In conclusion, teaching perimeter with decimal side lengths can be a fun experience for both teachers and students. Providing students with a variety of learning resources such as notes, hands-on activities, computer games, and scavenger hunts would enable students to understand the concept more fully. Ensure to continue challenging students by varying the difficulty levels and assignments as they progress.