Open Number Line

The Open Number Line Floor Mat is a long, single-column mat with 20 hash marks equidistant apart
so that they can be used in many different ways to show number sequences. To maximize its flexibility,
it does not come with any numbers written on it.

To create numbers for the number line, you can use large index cards, 5×5 squares of felt, or large
squares of craft foam. Numbers can be written with a thick Sharpie marker. Differently colored cards,
felt, or foam can be used to identify multiples of five, ten, one hundred, or one thousand.

Each activity lends itself to students jumping from number to number and saying the number (or
number value), and/or solving an equation.

View the Activities

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Click on the activity name to view the full activity details.

1. Number Line 1-20

Have students label the hash marks on the mat from 1 to 20. Give them addition and subtraction problems within 20 to solve on the number line. For example, 7...READ MORE

2. Subtraction

Example: 82 â€“ 19 = ___ (1) Place the multiples of ten on the hash marks on the mat, starting with 0 and ending with 100. Have students skip count...READ MORE

3. Skip Count by 5â€™s or 10â€™s from any number

Place multiples of ten from 0 to 200 on the number line. Ask students to solve 40 + ___ = 170. The student begins at 40 and skip counts by...READ MORE

4. Understanding Halves of Multiples of 10

(1) Place the multiples of ten on every other hash mark, starting with 0 and ending with 50. Discuss finding the â€śhalf-wayâ€ť point between 0 and 10 (depending on the...READ MORE

5. Rounding Numbers

(1) Place the multiples of ten on every other hash mark, starting with 0 and ending with 50. Discuss finding the â€śhalf-wayâ€ť point between 0 and 10 (depending on the...READ MORE

6. Multiplication

Example: 3 x 6 = ___ (1) Place the numbers 0 to 20 on the hash marks, starting with 0 and ending with 20. Explain how 3 x 6 means...READ MORE

7. Fractions

(1) Label the first line with a 0 and the eighth line with a 1. Have students count the segments starting with the first line after the 0 as â€śoneâ€ť...READ MORE

8. Ordering Fractions from 0 to 1

(1) After using concrete models and manipulatives to understand that fractions are equal parts of a whole number, students can begin to place these values on the number line. (2)...READ MORE

9. What is the Fraction?

Use the number line to allow students to figure out fractions of a whole. Place a number 1 label at the fifth hash mark on the mat, a number 2...READ MORE

10. Thermometer

Use the number line vertically to represent a thermometer. Label every five marks with a multiple of ten, using the outdoor temperature as your range. For example, If it is...READ MORE