
Summer Challenge!
5^{th} grade summer challenge is to have all your multiplication facts 112 memorized before you come to school this fall. Practice, practice your multiplication facts and prove your knowledge for ice cream in September!
Multiplication Tables in 21 days!
Step 1
First of all, you will need to be able to skip count or count by a certain number. For instance 2,4,6,8,10 or 5, 10, 15, 20, 25. Now you will need to use your fingers when skip counting. Remember back in grade 1 when you used to use your fingers to count to 10? Now you'll need them to skipcount. For example, use your fingers to count by 10. First finger or thumb is 10, second is 20, third is 30. Therefore 1 x 10 = 10, 2 x 10 = 20 and so on and so forth. Why use your fingers? Because it's an effective strategy. Any strategy that improves speed with your tables is worth using!
Step 2
How many skip counting patterns do you know? Probably the 2's, 5's and 10's. Practice tapping these out on your fingers.
Step 3
Now you're ready for the 'doubles'. Once you learn the doubles, you have the 'counting up' strategy. For instance, if you know that 7 x 7 = 49, then you'll count up 7 more to quickly determine that 7 x 8 = 56. Once again, effective strategies are almost as good as memorizing your facts. Remember, you already know the 2's, 5's and 10's. Now you need to concentrate on 3x3, 4x4, 6x6, 7x7, 8x8 and 9x9. That's only committing 6 facts to memory! You're threequarters of the way there. If you memorize those doubles, you'll have an effective strategy to quickly obtain most of the remaining facts!
Step 4
Not counting the doubles, you have the 3's, 4's, 6's, 7's and 8's. Once you know what 6x7 is, you'll also know what 7x6 is. For the remaining facts (and there aren't many) you will want to learn by skipcounting, in fact use a familiar tune while skip counting! Remember to tap your fingers (just as you did when counting) each time you skip count, this enables you to know which fact you're on. When skip counting by 4's and when you've tapped on the fourth finger, you'll know that it's the 4x4=16 fact. Think of Mary Had A Little Lamb in your mind. Now apply 4,8, 12, 16, (Mary had a....)and continue on! Once you've learned to skipcount by 4's as easily as you can by 2's, you're ready for the next fact family. Don't worry if you forget the odd one, you will be able to fall back on your doubling strategy and counting up.
Remember, being able to do math well means having great strategies. The above strategies will help you learn the times tables. However, you will need to commit daily time to these strategies to learn your tables in 21 days.
Try some of the following:
· Each day when you wake up, skip count the fact family you're working on.
· Each time you walk through a doorway, skip count again (silently)
· Each time you use the washroom, skip count!
· Each time the phone rings, skip count!
· During every commercial when you're watching TV, skip count! When you go to bed each night, skip count for 5 minutes.
If you stick it out, you'll have your tables memorized in 21 days!
Check out these websites for more practice options.
http://www.mathsisfun.com/timestable.html
http://www.mathplayground.com/balloon_invaders.html
http://www.sowashco.k12.mn.us/ro/pages/studentlinks/map/