In Year 7, teachers help students learn how to change percentages into fractions and decimals using examples that are easy to understand. Here’s how they usually do it:

1. Understanding Percentages: First, teachers explain that 'percent' means “per hundred.” So, when you see a percentage like 25%, it means 25 out of 100. This can be shown as $\frac{25}{100}$. This helps students see how percentages relate to fractions.

2. Converting to Fractions: Next, they encourage students to simplify the fraction. For example, $\frac{25}{100}$ can be simplified to $\frac{1}{4}$. This means that 25% is the same as one quarter. Teachers give students many examples, like changing 50% into $\frac{50}{100} = \frac{1}{2}$.

3. From Fractions to Decimals: To turn fractions into decimals, teachers focus on division. For instance, to change $\frac{1}{4}$ into a decimal, you divide 1 by 4, which equals 0.25. This shows how these different forms connect with each other.

4. Practical Activities: Teachers also use real-life situations, like discounts when shopping or numbers from surveys. This makes the topic feel important and fun for students.

In summary, by mixing clear explanations, simplification, and real-life examples, Year 7 students learn how percentages, fractions, and decimals are related in a way that makes sense to them.