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

**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.

**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

**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.

**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

**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.

**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

**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.

**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

**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.

**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.