Simple techniques have been used to enable gigantic leaps towards understanding and explaining new scientific, mathematical, and technological ideas. The number line was one of the most important “inventions” in mathematics. The Ancient Egyptians could be credited with a highly convenient number line about 2,500 years ago. They tied knots at identical distances along a seam that was employed by counting the number of spots to measure their length.
The credit is commonly attributed to the Englishman John Wallis for designing a number line that shows numbers less than 0. He used a solid 0 line and the positive numerals and a dotted negative line in his earliest illustrations. The usage of number lines showed negative numbers and, more crucially, they were utilized to connect all numbers. Number lines are important because they show how numbers are represented in real life. They were created primarily to allow negative numbers to be expressed in a logical manner as stated before. A subsequent but equally important result was a technique to display all real numbers, including the enigmatic irrational numbers such, –, 2, −2, and so on. As a result, the number line has evolved into a versatile and useful visual tool for teaching kids about numbers. This tool is a major step forward in exploring new mathematical ideas because, by means of employing only one visual model, it was possible to interact with numbers!
There are three basic pieces to a number line. The origin is commonly plotted with zero in the center. This mnemonic can help you recall that the origin is zero: “The origin of most things is nothing.” Negative numbers are displayed to the left of the origin, and positive numbers are plotted to the right. The ends of the horizontal line are marked with arrows to indicate that the line continues to infinity. Number lines can be used to teach simple number addition and subtraction to children. This kind of instruction is beneficial since students can picture the operations and hence learn and understand more rapidly:
Addition using number line: As we all know, adding two positive numbers always results in a positive-sum. As a result, the direction of movement when adding positive numbers is to the right. (For example, (1+4) Equals 5: Locate number 1 on the number line and proceed four steps to the right. After taking four steps from one, you will arrive at the number 5. As a result, the answer is 5. Likewise, when two negative numbers are added together, the result is a negative number. As a result, when adding negative integers, the direction of movement is to the left.
Subtraction using a number line: When subtracting positive numbers, start at the left and work your way to the right, keeping the value of the second number in mind. Subtract 6-3, for example, when the second number is 3 and the first number is 6. Move 3 steps to the left of the number 6 on the number line. The following number is 3, which is the correct answer. To subtract two negative numbers on a number line, start with the first number and move to the right with reference to the value of the second number.
A number line can also be used for multiplication. To accommodate these values, you must draw a larger number line in this scenario. Depending on the numbers being multiplied, you can create a number line by selecting a suitable scale. To multiply 5 by 3, start counting from the origin and move 5 steps three times. In this scenario, 15 is the correct response.
Despite the fact that today’s teachers have a plethora of tools for modeling mathematics, the number line remains an important and helpful math tool. While cubes and other manipulatives help students learn by representing numbers, the number line helps children learn by providing them a different perspective on number relationships. For some ideas, your primary pupils may find utilizing a number line more difficult. It’s crucial to persist with it, though, because number lines allow possibilities to acquire subsequent concepts that cubes can’t, such as negative numbers, decimals, rounding, and graphing.
If you are a mathematics teacher, all these are crucial to the success of your students. That is why we have picked some of the best number line chart designs from amazon for you to choose from. Click on the title of the designs you are interested in, to get to the respective product pages.
1. Carson Dellosa Number Line Bulletin Board Set with Color-Coded Even and Odd Numbers from -20 to 120
Everything you need to teach and reinforce even and odd numbers, negative numbers, counting, number patterns, and more are included in this bulletin set, which is organized and structured. The 14 bulletin board border strips in this collection can be used to decorate bulletin boards, make wall displays, and more. The color-coded border strips (even and odd numbers separately) has numbers ranging from-20 to 120.
This teacher decor item also functions as a tool to help students learn more about numbers, counting, and order. Each arithmetic number line visual is 4 inches by 36 inches. The entire number line is made up of 12 individual sections when combined forms numbers from -20 to 100. It’s simple to put up on the classroom wall or bulletin board. The blue number line which also has large black font is easy to read and see.
This bright number line border will make math classes more enjoyable and enjoyable. If you put a border around the bulletin board, everyone will pay more attention to it. The way these look in the classroom will delight both teachers and pupils. Negative and positive numbers are shown on the number line bulletin board border, which runs from -100 to 100. It’s a simple way to learn how to count. It comes in nice packaging that can be stored without taking up much room or risking bending or damage.
This set does not include negative numbers, with values ranging from 0 to 100. However, the package includes little squares that can be placed over the individual numbers, which can be extremely useful to highlight a value during mathematical operations. Even numbers are blue and odds are red to easily identify and learn evens and odds. The number line itself is divided into 20 fragments and requires assembly. Mounting can be done easily due to the magnetic nature of these fragments.
The display uses color to distinguish between tens and odd and even numerals. Each numeral has its own number word, as well as positive and negative number banners and four ordering signals. The package also includes “positive numbers” and “negative numbers” banners, “less than”, “greater than”, “less than or equal to”, and “greater than or equal to” banners, and also an activity guide.
This number train bulletin board set is designed with a variety of words and photographs, has a brilliant visual effect, is simple to attract attention, and creates an engaging learning environment. The understandable text may assist you in teaching character recognition and formation quickly and effectively. Keep in mind that it is designed for smaller kids, who are yet to be familiar with counting and the chronology of numbers. No negative numbers are included, and the scope of arithmetic operations is limited by their range.
This multi-purpose teaching tool has 29 parts with numbers ranging from -10 to 120 and arrows to assist your kids in practicing math, counting, and other abilities. Two blank parts are also included in the package, which you can personalize for a variety of learning opportunities. This number line’s magnetic construction makes it simple to hang on any whiteboard. These pieces can be used to finish your classroom or home learning setup.
This is another great simplistic design by Carson Dellosa. It has a crepe background and blue font with stars below each number value, which is a nice touch. A teacher has noted in the reviews “Great number line. Just need to laminate it. Good size. My students love using the pointers with a hand on the end to practice skip counting. I use this in conjunction with a 100’s chart pocket chart and 100’s chart they keep on their lap.”
These rolls of the decorative number line are shrink-wrapped and shipped. A single roll of 36 feet paper bulletin border is included in each pack, with values from -20 to 100. It is also easy to keep and won’t be bent easily. You can save a lot of space with these. These borders are ideal for using to decorate bulletin boards in the school, children’s room, painting room, and reading room. They may also be used to decorate windows, doors, and classroom centers.
This product contains six number paths sets as well as an activity guide, making it ideal for small group learning. Each individual number path counts up to 20 and has a slider that clicks into place at each number. The tool is only the size of a small ruler and can be handed out to the kids so that they can interact with it individually.