Mastering the order of operations can be tough for Year 7 students. This concept is often remembered as BIDMAS (Brackets, Indices, Division, Multiplication, Addition, and Subtraction) or BODMAS (Brackets, Orders, Division, Multiplication, Addition, and Subtraction). It plays an important role in math, but many students find it hard to use correctly when simplifying expressions. Here are some reasons why they struggle:

1. Abstract Thinking
   For many Year 7 students, thinking about complex math problems can be confusing. For example, when they see $3 + 4 \times 2$, they often want to add the numbers first because they read from left to right. This misunderstanding can lead to wrong answers, like thinking $3 + 4$ equals $14$ instead of the right answer, which is $11$.

2. Confusion with Operations
   Students often mix up the order of operations. They might not see the difference between multiplication and addition, which can cause mistakes. In a problem like $2 + 3 \times 5 - 1$, they might not remember to do the multiplication first. This confusion can lead to more errors, especially in harder problems.

3. Negative and Positive Numbers
   Adding negative numbers makes things even trickier. Students who are still learning about the order of operations may find it especially challenging when faced with expressions like $-2 + 3 \times (2 - 5)$. Combining these new ideas can be very complicated.

4. Dependence on Memorization
   Many students memorize the BIDMAS/BODMAS rules without really understanding how to use them in real life. When they encounter word problems or practical situations, they might struggle to apply what they've learned. This is often seen when students deal with multi-step problems.

To help students overcome these challenges, teachers can use several effective strategies:

• Visual Aids and Models
  Teachers can use pictures, flowcharts, and diagrams to show the order of operations clearly. For instance, a visual that highlights the importance of different operations can make it easier for students to remember the right order. This helps them understand the concept better.

• Practice with Various Examples
  Giving students different types of practice problems can help them learn more effectively. Starting with simple problems, like $5 + 2 \times 3$, and gradually moving to more complex ones, like $4 \times (2 + 3) - 5$, allows students to gain confidence and improve their skills over time.

• Encouraging Teamwork
  Working in groups can help students learn from each other. When they explain their thought processes to their peers, they can discover and correct misunderstandings. This group support can really help reinforce what they are learning.

• Using Technology
  Fun educational apps or software can give students quick feedback on order of operations problems. Instant feedback helps them spot mistakes and better understand the rules.

In conclusion, while the order of operations can be challenging for Year 7 students, effective teaching methods can make things easier. It's important to recognize their struggles. With the right support, teachers can help their students build a strong math foundation, preparing them for more advanced topics in the future.