# Activities to Teach Students to Use Input/Output Tables With Addition, Subtraction, Multiplication, and Division

Input/output tables are a useful tool in mathematics and can be used to teach students various operations like addition, subtraction, multiplication, and division. These tables are designed to help students see the relationship between the input and output values of a function. Understanding these relationships can help students understand the concept of variables and functions better. Here are some activities to teach students to use input/output tables with addition, subtraction, multiplication, and division.

1. Addition Activity – Number Sequences

To teach addition input/output tables, start with a simple activity that uses number sequences. Give each student a worksheet with a sequence of numbers in the input column. Then, they must add a specific value to each input value to get the output value in the next column. For example, if the input column begins with the sequence 2, 3, 4, 5, the students should add 3 to each number and write their answers in the output column. This should result in the sequence 5, 6, 7, 8. To make it more challenging, you can increase the number that students have to add to the input value.

2. Subtraction Activity – Mystery Numbers

For subtraction input/output tables, give each student a worksheet with a sequence of numbers in the output column. The input column should be left blank. Each output number should be the difference between a specific mystery number and the input value. This activity can be more challenging, and you can increase the level of difficulty by increasing the mystery numbers’ range.

3. Multiplication Activity – Balancing Act

In this activity, students will learn how multiplication input/output tables work through a balancing act. Provide students with a balance and sets of objects like cups, blocks, or other small items. Assign each object a value, and label the input and output columns. In the input column, have students place their selected objects and record the weight in grams in the corresponding box. Then, they will multiply the input grams by a specific number and record their answer in the output column. The student will place a weight set that is equal to the output value on the opposite side of the balance to keep it balanced.

4. Division Activity – Scaling Down

Division input/output tables can be taught through a scaling-down activity. Provide each student with an image to scale down by dividing the length and width length by a specific number. They must then record the original and new measurements in the input/output columns. Make it harder by having students work backwards to choose a new scale and calculate the result.

In conclusion, input/output tables are a practical way to teach students about variables and functions. These activities will enable students to learn about the relationship between the input and output values of a function through addition, subtraction, multiplication, and division. These activities are great to use both in the classroom and at home, and you can easily adapt them to suit learners of different ages and abilities.