Chapter 3: Whole Number - Multiplication by a 2-digit Number

I am a lightning Fast Multiplier (Mentally)

Learning Objectives:

By the end of this lesson, YOU will BE able to:

• multiply any 2-3 digit number by 11 faster than a calculator (Mentally)
• multiply any 2-digit number (up to 19) by any 2-digit number (up to 19) faster than a calculator (Mentally)

NOTE: Have your Math Discovery Book Ready before you start and take notes along the way

Activity 1: Back to Basics (10 Minutes)
Let's start with some simple Mental Calculations practise.

Here's the instructions (Read them thoroughly before you begin)

1. Go to http://www.arcademicskillbuilders.com/ (remember to use the left click)
2. Get 3 other friends to join in a game of Multiplication Grand Prix
3. One of you will create a Private 'Standard Content' game
4. Play the game when everyone is ready
5. Record your Accuracy, Rate and What You Missed after the game
6. Play ONE more game to see if you can do better than the previous game

Activity 2: Let's Get Better at 2-digit Multiplication (10 minutes)
You have learned in your Mathematics lesson on Multiplication of whole number by a 2-digit number. Now, watch a video on how you can improve your accuracy and speed with a great technique




Activity 3: Are You Ready to Test Your New Skills? (10 Minutes)All right! Now, you have an option of testing it by yourself or the same group of friends from the game earlier.
Your choice and please respect the choice of others as well. (Start the game on your own and challenge the computer if you are playing alone).

Here's the instructions (Read them thoroughly before you begin) It's different from the earlier one

1. Go to http://www.arcademicskillbuilders.com/ (remember to use the left click)
2. Get 3 other friends to join in a game of Multiplication Grand Prix
3. One of you will create a Private 'Custom Content' game
4. Set the range for the FIRST BOX with the number 10
5. Set the range for the SECOND BOX with the number 11
6. Play the game when everyone is ready
7. Record your Accuracy, Rate and What You Missed after the game
8. Play ONE more game (remember to create Custom Content) to see if you can do better than the previous game

Activity 4: Ready To Take On The Rest Of The 2-digits? (10 Minutes)
Here's another video showing another technique that will allow you to multiply any 2-digit number (up to 19) by any 2-digit number (up to 19) within seconds.




Activity 5: Test Drive Your Newly Acquired Skills? (10 Minutes)
Like Activity 3, You have the option of testing it by yourself or the same group of friends from the game earlier.
Your choice and please respect the choice of others as well. (Start the game on your own and challenge the computer if you are playing alone).

Here's the instructions (Read them thoroughly before you begin) It's DEFINITELY different from the earlier one

1. Go to http://www.arcademicskillbuilders.com/ (remember to use the left click)
2. Get 3 other friends to join in a game of Multiplication Grand Prix
3. One of you will create a Private 'Custom Content' game
4. Set the range for the FIRST BOX with the number 10
5. Set the range for the SECOND BOX with the number 19
6. Play the game when everyone is ready
7. Record your Accuracy, Rate and What You Missed after the game
8. Play ONE more game (remember to create Custom Content) to see if you can do better than the previous game

Activity 5: Rounding Up Reflection (5 Minutes or complete after lesson)
Go to Google Docs and write down your learning experience from this lesson.
Here are a few pointers to guide you -

• What have I learned today that is useful to me?
• Can I use the techniques learned in my daily activity (other than during Mathematics lesson or exam)?
• Did I face any difficulty when learning the techniques or when testing out the techniques?
• What did I do to overcome the difficulties?
• What will I do to overcome the difficulties? (if you have not find a solution yet)

Share your reflection with me (jonlohn@gmail.com)

Hope you had fun learning!!