What is the fastest way to thoroughly learn times tables for a 3rd grader?
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Anonymous
I agree with you. They get the concept way before they become fluent at memorizing n |
Anonymous
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Print this and mark off what he knows.
http://www.sjusd.org/booksin/docs/Multiplication_Table_1-12.pdf Teach him in this order 0 1 10 2 (first teach him to count by 2's) 5 (first teach him to count by 5's) 4 (teach him 4 x 3 is really 2x3=6x2=12) (concept not memorization) (but if he can memorize great) 9 (teach the trick for 9's) 9x5= (first number is 5-1=4, 2nd number is 4+whatever equals nine 4+5=9) answer is 45 (the two numbers always equal 9) I will do 1 more 9 for you 9x8 = (first number is 8-1=7, 2nd number is 7+whatever equals nine 7+2) answer 72 (7+2=9) There is also a finger trick you can learn from the internet. Memorize 1x1, 2x2, 3x3, 4x4... it on the diagonal and it is important when you do square roots. 11, they are easy 11x4 = 44, you only need to memorize 11x11 and 11x12 You are left with 3, 6, 7, 8, 12 but if you mark off all the 0, 1, 2, 4, 5, 9, 10, 11 and the diagonal you will see you don't have that much to memorize. The only fun trick I have is 8x8 is 64... I ate and ate and got sick (six) on the floor (four) |
Anonymous
| What one or two posters have said. Try to practice skip-counting first 2,4,6,.... 3,6,9....,4,8,12... until he gets it down pat. Then move on to flash cards for 15 minutes a day. |
Anonymous
Nice. So logical. Our school uses Everyday Math too (it sucks) so this is great for future reference. OP, our school supplements with Rocket Math. DS is younger so we are only working on addition now, but you could check out the website. Basically your child practices small sets of facts for short periods of time until they master them and move on to the next set. The only complaint I have is that there are very specific rules for implementing it "correctly" and achieving mastery that don't actually seem to have been empirically tested. My kid is kind of a slow processor and writer so if the school were following the actual rules and time limits for him he would still be practicing copying numbers (what you do before you learn facts). Luckily they played around with the timing and writing requirements for him and he is almost all the way through the addition facts. He is definitely mastering them even with the changes. There is also a Rocket Math app. It is useless for us because there is no way to adjust the timing requirements, but it might be great for other kids. |
Anonymous
| Use a calculator. |
Anonymous
Anonymous
| Multiplication dot com. Fun games and taught all my kids their times facts. |
Anonymous
| And periodically have him do timed tests to see if you can identify specific problems that are giving him trouble. I realized very quickly that my daughter struggled with the 7s table and only a few other random equations. We had her drilling flashcards only for the specific things she needed so her interest stayed high. |
Anonymous
I second flash cards and counting by multiples (and playing Buzz, where people take turns counting, and the multiples of a given number are replaced by "Buzz." For more advanced students, you do the multiples of more than one number, using two different words, and a number that is a multiple of both is replaced by both words.) |
Anonymous
| Teacher. Assuming your child understands the concept of multiplication then rote memorization is the only way to go. There are some shortcuts such as doubles for times two, zero after for times ten but students do need to eventually memorize their multiplication facts. This is also necessary for division. |
Anonymous
| There's an app for that. Multiplication apps are great, you can choose how high the numbers can go. I also printed blank tables and would have him full them in, and sometimes I would point to a certain square so he wasn't just going I order. |
Anonymous
| I liked math-drills.com, print off a page of 100 problems and have DC complete one sheet using a table to look up the ones they don't know.it may seem pointless to let them look up the answers, but, believe me, they get sick of doing that really quickly. As they get better you can move to timed drills allowing five minutes to complete one sheet without looking them up. My youngest is third grade and he knows them all, same method worked for the oldest two, too. |
Anonymous
| Schoolhouse Rock. They're on YouTube. |
Anonymous
| There's an app for that |
Anonymous
It's called Math Fact Master. We requires my DD to do 50 flash cards before she can have any other screen time. She learned them quickly using the app. You can see what the miss and where the gaps are |