Lesson start ideas | Give a creative idea how to begin a lesson |
Which subject | Mathematics |
What age group | Year or Grade 5 |
What topic | Order of operations |
Quantity | 1 |
Any other preferences |
Welcome back, fifth-graders! Today, we will be exploring the enchanting world of mathematics. We will be focusing on one of the most important concepts in math - the order of operations.
Operations are the different mathematical actions we can perform. We can add, subtract, multiply, and divide, among other things.
Just like in real life, mathematical operations also have rules that we need to follow. We can't just add, subtract, multiply, and divide in any order we want. We need to follow a specific set of rules, known as the order of operations.
But before we dive deep into the rules, let me show you a magic trick. I will write down a bunch of numbers, and you will pick two numbers at random. Then, I will use the order of operations to transform those numbers into a new number. And here's the magic - no matter which two numbers you pick, the final answer will always be the same! Ready to see the trick?
Now that we've seen the magic, let's get to the rules. The order of operations tells us the order in which we should perform different mathematical operations. The rules are as follows:
Let's put these rules into practice. Here is an example:
8 + 4 x 2 - 6 ÷ 3
Using the order of operations, we perform the multiplication and division first, then the addition and subtraction. So, our solution should be:
8 + (4 x 2) - (6 ÷ 3)
8 + 8 - 2
16 - 2
14
Great job, everyone! Today we learned about the order of operations and how it's used in mathematical operations. Remember to practice this concept, and soon enough, it will become second nature. See you all next time!