# how to make rational numbers working model – maths tlm – simple and easy – diy

In this post I am showing you how to make the rational numbers working model using syringes – maths tlm – simple and easy – diy using cardboard and color paper so that you can learn rational number concepts in easier way

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Creating a working model to illustrate rational number concepts using cardboard, syringes, and tubing can be a highly interactive and visual project.

This model will help demonstrate how rational numbers (fractions) can be understood through a liquid measurement analogy. Here’s how you can make one:

### Materials Needed

• Cardboard (for the base and structure)
• Syringes (to measure and move liquids)
• Flexible plastic tubing (to connect syringes and simulate the number line)
• Colored water (for visual representation of different fractions)
• Glue or tape
• Scissors
• Ruler
• Markers or pens
• Small containers (to hold colored water)
• Labels or stickers (to mark measurements)
• Small clips or clamps (optional, to control the flow of water)

## Step By Step To Make the rational numbers working model – maths tlm

#### 1. Prepare the Base and Structure

1. Base Board:
• Cut a large rectangular piece of cardboard to serve as the base. This will hold the entire setup.
• Decorate or paint the base if desired.
2. Support Structure:
• Create vertical supports from cardboard to hold the syringes and tubing in place.
• Ensure the supports are sturdy and tall enough to allow the syringes to be positioned vertically.

#### 2. Set Up the Syringes and Tubing

1. Syringe Placement:
• Attach syringes to the vertical supports using glue or tape.
• Arrange the syringes in a way that they can be filled and emptied into the tubing.
2. Connecting Tubing:
• Cut pieces of flexible plastic tubing to connect the syringes.
• Attach one end of the tubing to the nozzle of a syringe and the other end to another syringe or container.

#### 3. Marking Measurements

1. Measurement Labels:
• Use markers to draw measurement lines on the syringes (e.g., 1/4, 1/2, 3/4, 1). These will represent fractions.
• Label each measurement clearly.
2. Number Line Representation:
• Create a number line on a strip of cardboard to show fractions.
• Mark points on the number line corresponding to 0, 1/4, 1/2, 3/4, 1, etc.

#### 4. Demonstrating Rational Numbers

1. Filling Syringes with Colored Water:
• Prepare colored water in small containers. Different colors can represent different fractions.
• Use the syringes to draw up colored water to different fractional measurements.
2. Using Tubing to Transfer Water:
• Show how combining different fractions works by transferring water between syringes.
• For example, fill one syringe to 1/4 and another to 1/2, then combine the water in a third syringe to show the sum of the fractions.

#### 5. Interactive Learning

1. Problem Solving:
• Create problems for students to solve using the model. For example, “Combine 1/4 and 1/2. What fraction do you get?”
• Allow students to measure and transfer water to find the answers.
2. Visualizing Equivalents:
• Show equivalent fractions by transferring water to syringes marked with different denominators.
• For example, show that 1/2 is equivalent to 2/4 by filling one syringe to 1/2 and another to 2/4 with the same amount of water.

By following these steps, you’ll create an engaging and educational working model to help students understand rational numbers using cardboard, syringes, and tubing.