Introduction
Can you go to your classes whenever you want or do you have to follow the order of the schedule you were assigned? Will your locker open if you use the three numbers in any order? Does it matter if you turn the lock to the left or to the right first? Does 2 + 5 x 3 equal 21 or 17? You will be using this WebQuest to find out the order of operations that must be followed when evaluating mathematical expressions so that everyone gets the same answer.
Task
You are going to determine the order of operations that is used to evaluate mathematical expressions. Once you have done this, you will discover memory devices the United States uses to remember the order of operations and compare them to those that other countries use. Then create your own mnemonic and illustrate it using Microsoft Word. There will be several checks for understanding along the way including a matching challenge and an online quiz. Finally, you will work with a partner to analyze a problem that was done incorrectly and create a PowerPoint presentation that identifies the error in the problem and demonstrates the correct way to evaluate the problem with a step-by-step explanation.
Process
1. What is the order of operations?
- Obtain a copy of Order of Operations WebQuest handout from your teacher.
- Go to Order of Operations - PEMDAS and answer questions 1-4 on your WebQuest handout.
- View the math goodies and answer questions 5-10 on your WebQuest handout. You can always pause or rewind if you need extra time to write down answers. (There is no sound with this video.)
- Play the Matching Game, assess how you did and circle your response on your WebQuest handout (#11). If you feel you need more practice, try playing the Matching Game again or read the lesson Order of Operations With Exponents and try the five problems after the tutorial.
2. What are some memory devices used to remember the order of operations?
- Go to Wikipedia's definition of Order of Operations and scroll down to the Acronyms and More examples sections. Answer questions 12-13 on your WebQuest handout. View the illustrated mnemonics Please Excuse My Dear Aunt Sally and Panda Express Makes Delicious Avocado Soup. Create your own mnemonic and illustrate it using Microsoft Word. Fill in #14 on your WebQuest handout.
3. Quiz Timw.
- With a partner, take the online Order of Operations Quiz. Answer questions 15 and 16 on your WebQuest handout.